100021020023 has 32 divisors (see below), whose sum is σ = 107318255616. Its totient is φ = 93000112128.

The previous prime is 100021020013. The next prime is 100021020041. The reversal of 100021020023 is 320020120001.

It is a happy number.

It is not a de Polignac number, because 100021020023 - 2²⁶ = 99953911159 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 100021019986 and 100021020013.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (100021020013) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 168669215 + ... + 168669807.

It is an arithmetic number, because the mean of its divisors is an integer number (3353695488).

Almost surely, 2^100021020023 is an apocalyptic number.

100021020023 is a deficient number, since it is larger than the sum of its proper divisors (7297235593).

100021020023 is a wasteful number, since it uses less digits than its factorization.

100021020023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1463.

The product of its (nonzero) digits is 24, while the sum is 11.

Adding to 100021020023 its reverse (320020120001), we get a palindrome (420041140024).

The spelling of 100021020023 in words is "one hundred billion, twenty-one million, twenty thousand, twenty-three".