12001113111021 has 16 divisors (see below), whose sum is σ = 16866836313600. Its totient is φ = 7569224430768.

The previous prime is 12001113110993. The next prime is 12001113111049. The reversal of 12001113111021 is 12011131110021.

It is an interprime number because it is at equal distance from previous prime (12001113110993) and next prime (12001113111049).

It is not a de Polignac number, because 12001113111021 - 2¹⁴ = 12001113094637 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12001113111061) 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, 144763131 + ... + 144846008.

It is an arithmetic number, because the mean of its divisors is an integer number (1054177269600).

Almost surely, 2^{12001113111021} is an apocalyptic number.

It is an amenable number.

12001113111021 is a deficient number, since it is larger than the sum of its proper divisors (4865723202579).

12001113111021 is a wasteful number, since it uses less digits than its factorization.

12001113111021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 289609888.

The product of its (nonzero) digits is 12, while the sum is 15.

Adding to 12001113111021 its reverse (12011131110021), we get a palindrome (24012244221042).

The spelling of 12001113111021 in words is "twelve trillion, one billion, one hundred thirteen million, one hundred eleven thousand, twenty-one".