21131030101204 has 12 divisors (see below), whose sum is σ = 37766096351424. Its totient is φ = 10340716857944.

The previous prime is 21131030101193. The next prime is 21131030101219. The reversal of 21131030101204 is 40210103013112.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 56199547954 + ... + 56199548329.

It is an arithmetic number, because the mean of its divisors is an integer number (3147174695952).

Almost surely, 2^{21131030101204} is an apocalyptic number.

It is an amenable number.

21131030101204 is a deficient number, since it is larger than the sum of its proper divisors (16635066250220).

21131030101204 is a wasteful number, since it uses less digits than its factorization.

21131030101204 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 112399096334 (or 112399096332 counting only the distinct ones).

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

Adding to 21131030101204 its reverse (40210103013112), we get a palindrome (61341133114316).

The spelling of 21131030101204 in words is "twenty-one trillion, one hundred thirty-one billion, thirty million, one hundred one thousand, two hundred four".