100021102031 has 4 divisors (see below), whose sum is σ = 100658179272. Its totient is φ = 99384024792.

The previous prime is 100021102019. The next prime is 100021102033. The reversal of 100021102031 is 130201120001.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 100021102031 - 2³⁴ = 82841232847 is a prime.

It is a super-2 number, since 2×100021102031² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (100021102033) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 318538385 + ... + 318538698.

It is an arithmetic number, because the mean of its divisors is an integer number (25164544818).

Almost surely, 2^100021102031 is an apocalyptic number.

100021102031 is a deficient number, since it is larger than the sum of its proper divisors (637077241).

100021102031 is an equidigital number, since it uses as much as digits as its factorization.

100021102031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 637077240.

The product of its (nonzero) digits is 12, while the sum is 11.

Adding to 100021102031 its reverse (130201120001), we get a palindrome (230222222032).

The spelling of 100021102031 in words is "one hundred billion, twenty-one million, one hundred two thousand, thirty-one".