2021123131120 has 40 divisors (see below), whose sum is σ = 4699173229200. Its totient is φ = 808438594560.

The previous prime is 2021123131109. The next prime is 2021123131147. The reversal of 2021123131120 is 211313211202.

It is a tau number, because it is divible by the number of its divisors (40).

It is a super-2 number, since 2×2021123131120² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9239815 + ... + 9456025.

It is an arithmetic number, because the mean of its divisors is an integer number (117479330730).

Almost surely, 2^{2021123131120} is an apocalyptic number.

2021123131120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2021123131120 is an abundant number, since it is smaller than the sum of its proper divisors (2678050098080).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2021123131120 is a wasteful number, since it uses less digits than its factorization.

2021123131120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 333073 (or 333067 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 19.

Adding to 2021123131120 its reverse (211313211202), we get a palindrome (2232436342322).

The spelling of 2021123131120 in words is "two trillion, twenty-one billion, one hundred twenty-three million, one hundred thirty-one thousand, one hundred twenty".