2131020121100 has 72 divisors (see below), whose sum is σ = 4980297105168. Its totient is φ = 786796012800.

The previous prime is 2131020121093. The next prime is 2131020121163. The reversal of 2131020121100 is 11210201312.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 34888787 + ... + 34949813.

Almost surely, 2^{2131020121100} is an apocalyptic number.

2131020121100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2131020121100 is an abundant number, since it is smaller than the sum of its proper divisors (2849276984068).

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

2131020121100 is a wasteful number, since it uses less digits than its factorization.

2131020121100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 87915 (or 87908 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 14.

Adding to 2131020121100 its reverse (11210201312), we get a palindrome (2142230322412).

The spelling of 2131020121100 in words is "two trillion, one hundred thirty-one billion, twenty million, one hundred twenty-one thousand, one hundred".