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13220122230 = 2325720984321
BaseRepresentation
bin11000100111111101…
…10000111001110110
31021010022222210101200
430103332300321312
5204033322402410
610023453033330
7645415120260
oct142376607166
937108883350
1013220122230
115674461557
12268b485846
131328b82c43
148d5aa8b30
155259333c0
hex313fb0e76

13220122230 has 48 divisors (see below), whose sum is σ = 39282650784. Its totient is φ = 3021742080.

The previous prime is 13220122187. The next prime is 13220122247. The reversal of 13220122230 is 3222102231.

It is a super-2 number, since 2×132201222302 (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 an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 10491531 + ... + 10492790.

It is an arithmetic number, because the mean of its divisors is an integer number (818388558).

Almost surely, 213220122230 is an apocalyptic number.

13220122230 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

13220122230 is an abundant number, since it is smaller than the sum of its proper divisors (26062528554).

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

13220122230 is a wasteful number, since it uses less digits than its factorization.

13220122230 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20984341 (or 20984338 counting only the distinct ones).

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

Adding to 13220122230 its reverse (3222102231), we get a palindrome (16442224461).

The spelling of 13220122230 in words is "thirteen billion, two hundred twenty million, one hundred twenty-two thousand, two hundred thirty".

Divisors: 1 2 3 5 6 7 9 10 14 15 18 21 30 35 42 45 63 70 90 105 126 210 315 630 20984321 41968642 62952963 104921605 125905926 146890247 188858889 209843210 293780494 314764815 377717778 440670741 629529630 734451235 881341482 944294445 1322012223 1468902470 1888588890 2203353705 2644024446 4406707410 6610061115 13220122230