12256831196161 has 8 divisors (see below), whose sum is σ = 12355410180960. Its totient is φ = 12158400787968.

The previous prime is 12256831196131. The next prime is 12256831196191. The reversal of 12256831196161 is 16169113865221.

It is an interprime number because it is at equal distance from previous prime (12256831196131) and next prime (12256831196191).

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 12256831196161 - 2⁷ = 12256831196033 is a prime.

It is a super-2 number, since 2×12256831196161² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12256831196099 and 12256831196108.

It is not an unprimeable number, because it can be changed into a prime (12256831196131) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 36978496 + ... + 37308481.

It is an arithmetic number, because the mean of its divisors is an integer number (1544426272620).

Almost surely, 2^{12256831196161} is an apocalyptic number.

It is an amenable number.

12256831196161 is a deficient number, since it is larger than the sum of its proper divisors (98578984799).

12256831196161 is a wasteful number, since it uses less digits than its factorization.

12256831196161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 74288303.

The product of its digits is 933120, while the sum is 52.

The spelling of 12256831196161 in words is "twelve trillion, two hundred fifty-six billion, eight hundred thirty-one million, one hundred ninety-six thousand, one hundred sixty-one".