100131111021 has 8 divisors (see below), whose sum is σ = 133620062400. Its totient is φ = 66698116832.

The previous prime is 100131111011. The next prime is 100131111029. The reversal of 100131111021 is 120111131001.

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 100131111021 - 2¹⁸ = 100130848877 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 100131110988 and 100131111006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (100131111029) 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, 13985121 + ... + 13992278.

It is an arithmetic number, because the mean of its divisors is an integer number (16702507800).

Almost surely, 2^100131111021 is an apocalyptic number.

It is an amenable number.

100131111021 is a deficient number, since it is larger than the sum of its proper divisors (33488951379).

100131111021 is a wasteful number, since it uses less digits than its factorization.

100131111021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27978595.

The product of its (nonzero) digits is 6, while the sum is 12.

Adding to 100131111021 its reverse (120111131001), we get a palindrome (220242242022).

The spelling of 100131111021 in words is "one hundred billion, one hundred thirty-one million, one hundred eleven thousand, twenty-one".