12013233231021 has 32 divisors (see below), whose sum is σ = 17848231704576. Its totient is φ = 7124777712000.

The previous prime is 12013233231019. The next prime is 12013233231023.

12013233231021 is nontrivially palindromic in base 10.

It is an interprime number because it is at equal distance from previous prime (12013233231019) and next prime (12013233231023).

It is not a de Polignac number, because 12013233231021 - 2¹ = 12013233231019 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 12013233230982 and 12013233231000.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12013233231023) 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, 9913506 + ... + 11059116.

It is an arithmetic number, because the mean of its divisors is an integer number (557757240768).

Almost surely, 2^{12013233231021} is an apocalyptic number.

12013233231021 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

12013233231021 is a deficient number, since it is larger than the sum of its proper divisors (5834998473555).

12013233231021 is a wasteful number, since it uses less digits than its factorization.

12013233231021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1152433.

The product of its (nonzero) digits is 1296, while the sum is 24.

It can be divided in two parts, 1201323 and 3231021, that added together give a palindrome (4432344).

The spelling of 12013233231021 in words is "twelve trillion, thirteen billion, two hundred thirty-three million, two hundred thirty-one thousand, twenty-one".