100131302121 has 16 divisors (see below), whose sum is σ = 137603780160. Its totient is φ = 64726490880.

The previous prime is 100131302111. The next prime is 100131302147. The reversal of 100131302121 is 121203131001.

It is a happy number.

It is not a de Polignac number, because 100131302121 - 2⁶ = 100131302057 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 100131302121.

It is not an unprimeable number, because it can be changed into a prime (100131302101) 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, 2477116 + ... + 2517213.

It is an arithmetic number, because the mean of its divisors is an integer number (8600236260).

Almost surely, 2^100131302121 is an apocalyptic number.

It is an amenable number.

100131302121 is a deficient number, since it is larger than the sum of its proper divisors (37472478039).

100131302121 is a wasteful number, since it uses less digits than its factorization.

100131302121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4994536.

The product of its (nonzero) digits is 36, while the sum is 15.

Adding to 100131302121 its reverse (121203131001), we get a palindrome (221334433122).

The spelling of 100131302121 in words is "one hundred billion, one hundred thirty-one million, three hundred two thousand, one hundred twenty-one".