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212001120212 = 2278391222513
BaseRepresentation
bin1100010101110001000…
…0000101111111010100
3202021012201111202111012
43011130100011333110
511433134241321322
6241220355431352
721213404534450
oct3053420057724
9667181452435
10212001120212
1181a00118472
12351068b5558
1316cb778683b
14a391d11660
1557abd66ae2
hex315c405fd4

212001120212 has 24 divisors (see below), whose sum is σ = 429110705856. Its totient is φ = 89762951808.

The previous prime is 212001120151. The next prime is 212001120229. The reversal of 212001120212 is 212021100212.

It is a super-2 number, since 2×2120011202122 (a number of 23 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (14).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 45608933 + ... + 45613580.

It is an arithmetic number, because the mean of its divisors is an integer number (17879612744).

Almost surely, 2212001120212 is an apocalyptic number.

It is an amenable number.

212001120212 is an abundant number, since it is smaller than the sum of its proper divisors (217109585644).

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

212001120212 is a wasteful number, since it uses less digits than its factorization.

212001120212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 91222607 (or 91222605 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 212001120212 its reverse (212021100212), we get a palindrome (424022220424).

The spelling of 212001120212 in words is "two hundred twelve billion, one million, one hundred twenty thousand, two hundred twelve".

Divisors: 1 2 4 7 14 28 83 166 332 581 1162 2324 91222513 182445026 364890052 638557591 1277115182 2554230364 7571468579 15142937158 30285874316 53000280053 106000560106 212001120212