100023510021 has 4 divisors (see below), whose sum is σ = 133364680032. Its totient is φ = 66682340012.

The previous prime is 100023509969. The next prime is 100023510077. The reversal of 100023510021 is 120015320001.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 100023510021 - 2²² = 100019315717 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (100023510091) 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, 16670585001 + ... + 16670585006.

It is an arithmetic number, because the mean of its divisors is an integer number (33341170008).

Almost surely, 2^100023510021 is an apocalyptic number.

It is an amenable number.

100023510021 is a deficient number, since it is larger than the sum of its proper divisors (33341170011).

100023510021 is an equidigital number, since it uses as much as digits as its factorization.

100023510021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33341170010.

The product of its (nonzero) digits is 60, while the sum is 15.

Adding to 100023510021 its reverse (120015320001), we get a palindrome (220038830022).

The spelling of 100023510021 in words is "one hundred billion, twenty-three million, five hundred ten thousand, twenty-one".