12955055921 has 16 divisors (see below), whose sum is σ = 13957375680. Its totient is φ = 11979663360.

The previous prime is 12955055917. The next prime is 12955055933.

12955055921 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 12955055921 - 2² = 12955055917 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12955055941) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3579905 + ... + 3583521.

It is an arithmetic number, because the mean of its divisors is an integer number (872335980).

Almost surely, 2^12955055921 is an apocalyptic number.

It is an amenable number.

12955055921 is a deficient number, since it is larger than the sum of its proper divisors (1002319759).

12955055921 is a wasteful number, since it uses less digits than its factorization.

12955055921 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7264.

The product of its (nonzero) digits is 202500, while the sum is 44.

The spelling of 12955055921 in words is "twelve billion, nine hundred fifty-five million, fifty-five thousand, nine hundred twenty-one".