12321942151681 has 8 divisors (see below), whose sum is σ = 12443250869504. Its totient is φ = 12200665707360.

The previous prime is 12321942151619. The next prime is 12321942151699. The reversal of 12321942151681 is 18615124912321.

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

It is a de Polignac number, because none of the positive numbers 2^k-12321942151681 is a prime.

It is a super-2 number, since 2×12321942151681² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12321942151381) 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, 7300665 + ... + 8828566.

It is an arithmetic number, because the mean of its divisors is an integer number (1555406358688).

Almost surely, 2^{12321942151681} is an apocalyptic number.

It is an amenable number.

12321942151681 is a deficient number, since it is larger than the sum of its proper divisors (121308717823).

12321942151681 is a wasteful number, since it uses less digits than its factorization.

12321942151681 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16136751.

The product of its digits is 207360, while the sum is 46.

The spelling of 12321942151681 in words is "twelve trillion, three hundred twenty-one billion, nine hundred forty-two million, one hundred fifty-one thousand, six hundred eighty-one".