12021131131023 has 16 divisors (see below), whose sum is σ = 18341611301376. Its totient is φ = 6860331340320.

The previous prime is 12021131131013. The next prime is 12021131131069. The reversal of 12021131131023 is 32013113112021.

12021131131023 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 12021131131023 - 2¹³ = 12021131122831 is a prime.

It is a super-2 number, since 2×12021131131023² (a number of 27 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12021131131013) 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, 370252083 + ... + 370284548.

It is an arithmetic number, because the mean of its divisors is an integer number (1146350706336).

Almost surely, 2^{12021131131023} is an apocalyptic number.

12021131131023 is a deficient number, since it is larger than the sum of its proper divisors (6320480170353).

12021131131023 is an equidigital number, since it uses as much as digits as its factorization.

12021131131023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 740537414.

The product of its (nonzero) digits is 216, while the sum is 21.

Adding to 12021131131023 its reverse (32013113112021), we get a palindrome (44034244243044).

The spelling of 12021131131023 in words is "twelve trillion, twenty-one billion, one hundred thirty-one million, one hundred thirty-one thousand, twenty-three".