100021012131 has 8 divisors (see below), whose sum is σ = 133368624144. Its totient is φ = 66677037440.

The previous prime is 100021012087. The next prime is 100021012183. The reversal of 100021012131 is 131210120001.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 100021012131 - 2⁹ = 100021011619 is a prime.

It is a super-2 number, since 2×100021012131² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (100021012331) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 844506 + ... + 955631.

It is an arithmetic number, because the mean of its divisors is an integer number (16671078018).

Almost surely, 2^100021012131 is an apocalyptic number.

100021012131 is a deficient number, since it is larger than the sum of its proper divisors (33347612013).

100021012131 is a wasteful number, since it uses less digits than its factorization.

100021012131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1818661.

The product of its (nonzero) digits is 12, while the sum is 12.

Adding to 100021012131 its reverse (131210120001), we get a palindrome (231231132132).

The spelling of 100021012131 in words is "one hundred billion, twenty-one million, twelve thousand, one hundred thirty-one".