12351888815321 has 32 divisors (see below), whose sum is σ = 13621535184000. Its totient is φ = 11107414656000.

The previous prime is 12351888815261. The next prime is 12351888815351.

12351888815321 is nontrivially palindromic in base 10.

It is a cyclic number.

It is not a de Polignac number, because 12351888815321 - 2⁶ = 12351888815257 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12351888815351) 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, 574522430 + ... + 574543928.

It is an arithmetic number, because the mean of its divisors is an integer number (425672974500).

Almost surely, 2^{12351888815321} is an apocalyptic number.

12351888815321 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

12351888815321 is a deficient number, since it is larger than the sum of its proper divisors (1269646368679).

12351888815321 is a wasteful number, since it uses less digits than its factorization.

12351888815321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23145.

The product of its digits is 3686400, while the sum is 56.

The spelling of 12351888815321 in words is "twelve trillion, three hundred fifty-one billion, eight hundred eighty-eight million, eight hundred fifteen thousand, three hundred twenty-one".