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13121031232122 = 23111753223950651
BaseRepresentation
bin1011111011101111101001…
…1001111101101001111010
31201110100200020010011022020
42332323322121331221322
53204433332443411442
643523415111535310
72522651246164422
oct276737231755172
951410606104266
1013121031232122
1141a966407a870
12157ab3a98a536
137424006c66b8
143350c02c9482
1517b494e3c9ec
hexbeefa67da7a

13121031232122 has 64 divisors (see below), whose sum is σ = 28657394196480. Its totient is φ = 3971948688000.

The previous prime is 13121031232109. The next prime is 13121031232129. The reversal of 13121031232122 is 22123213012131.

It is a super-2 number, since 2×131210312321222 (a number of 27 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 13121031232092 and 13121031232101.

It is not an unprimeable number, because it can be changed into a prime (13121031232129) 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, 259022497 + ... + 259073147.

It is an arithmetic number, because the mean of its divisors is an integer number (447771784320).

Almost surely, 213121031232122 is an apocalyptic number.

13121031232122 is an abundant number, since it is smaller than the sum of its proper divisors (15536362964358).

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

13121031232122 is a wasteful number, since it uses less digits than its factorization.

13121031232122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54659.

The product of its (nonzero) digits is 864, while the sum is 24.

Adding to 13121031232122 its reverse (22123213012131), we get a palindrome (35244244244253).

The spelling of 13121031232122 in words is "thirteen trillion, one hundred twenty-one billion, thirty-one million, two hundred thirty-two thousand, one hundred twenty-two".

Divisors: 1 2 3 6 11 22 33 66 1753 2239 3506 4478 5259 6717 10518 13434 19283 24629 38566 49258 50651 57849 73887 101302 115698 147774 151953 303906 557161 1114322 1671483 3342966 3924967 7849934 11774901 23549802 43174637 86349274 88791203 113407589 129523911 177582406 226815178 259047822 266373609 340222767 532747218 680445534 976703233 1247483479 1953406466 2494966958 2930109699 3742450437 5860219398 7484900874 198803503517 397607007034 596410510551 1192821021102 2186838538687 4373677077374 6560515616061 13121031232122