Search a number
-
+
12203032212 = 2233741393697
BaseRepresentation
bin10110101110101101…
…10111111010010100
31011111110011021012000
423113112313322110
5144442434012322
65334521155300
7611255030250
oct132726677224
934443137160
1012203032212
1151a2325798
12244692bb30
1311c6241027
1483a98d260
154b64c83ac
hex2d75b7e94

12203032212 has 96 divisors (see below), whose sum is σ = 37039107840. Its totient is φ = 3401533440.

The previous prime is 12203032187. The next prime is 12203032217. The reversal of 12203032212 is 21223030221.

It is a super-2 number, since 2×122030322122 (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12203032217) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 165853 + ... + 227844.

It is an arithmetic number, because the mean of its divisors is an integer number (385824040).

Almost surely, 212203032212 is an apocalyptic number.

12203032212 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

12203032212 is an abundant number, since it is smaller than the sum of its proper divisors (24836075628).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12203032212 is a wasteful number, since it uses less digits than its factorization.

12203032212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 393758 (or 393750 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

Adding to 12203032212 its reverse (21223030221), we get a palindrome (33426062433).

The spelling of 12203032212 in words is "twelve billion, two hundred three million, thirty-two thousand, two hundred twelve".

Divisors: 1 2 3 4 6 7 9 12 14 18 21 27 28 36 41 42 54 63 82 84 108 123 126 164 189 246 252 287 369 378 492 574 738 756 861 1107 1148 1476 1722 2214 2583 3444 4428 5166 7749 10332 15498 30996 393697 787394 1181091 1574788 2362182 2755879 3543273 4724364 5511758 7086546 8267637 10629819 11023516 14173092 16141577 16535274 21259638 24802911 32283154 33070548 42519276 48424731 49605822 64566308 74408733 96849462 99211644 112991039 145274193 148817466 193698924 225982078 290548386 297634932 338973117 435822579 451964156 581096772 677946234 871645158 1016919351 1355892468 1743290316 2033838702 3050758053 4067677404 6101516106 12203032212