12056065021 has 24 divisors (see below), whose sum is σ = 16309809152. Its totient is φ = 8671687200.

The previous prime is 12056064989. The next prime is 12056065031.

12056065021 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 12056065021 - 2⁵ = 12056064989 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12056065031) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 536445 + ... + 558466.

Almost surely, 2^12056065021 is an apocalyptic number.

12056065021 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

12056065021 is a deficient number, since it is larger than the sum of its proper divisors (4253744131).

12056065021 is a wasteful number, since it uses less digits than its factorization.

12056065021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1094953 (or 1094942 counting only the distinct ones).

The product of its (nonzero) digits is 3600, while the sum is 28.

It can be divided in two parts, 120560 and 65021, that added together give a palindrome (185581).

The spelling of 12056065021 in words is "twelve billion, fifty-six million, sixty-five thousand, twenty-one".