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13122211230 = 2325145802347
BaseRepresentation
bin11000011100010010…
…10000110110011110
31020212111202101202100
430032021100312132
5203333241224410
610010034305530
7643115645412
oct141611206636
936774671670
1013122211230
115624167577
1226627282a6
1313117c123b
148c6a9cd42
1551c0428c0
hex30e250d9e

13122211230 has 24 divisors (see below), whose sum is σ = 34117749432. Its totient is φ = 3499256304.

The previous prime is 13122211217. The next prime is 13122211241. The reversal of 13122211230 is 3211222131.

It is a super-2 number, since 2×131222112302 (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 11 ways as a sum of consecutive naturals, for example, 72901084 + ... + 72901263.

It is an arithmetic number, because the mean of its divisors is an integer number (1421572893).

Almost surely, 213122211230 is an apocalyptic number.

13122211230 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

13122211230 is an abundant number, since it is smaller than the sum of its proper divisors (20995538202).

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

13122211230 is a wasteful number, since it uses less digits than its factorization.

13122211230 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 145802360 (or 145802357 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

Adding to 13122211230 its reverse (3211222131), we get a palindrome (16333433361).

The spelling of 13122211230 in words is "thirteen billion, one hundred twenty-two million, two hundred eleven thousand, two hundred thirty".

Divisors: 1 2 3 5 6 9 10 15 18 30 45 90 145802347 291604694 437407041 729011735 874814082 1312221123 1458023470 2187035205 2624442246 4374070410 6561105615 13122211230