101023230021 has 32 divisors (see below), whose sum is σ = 154654617600. Its totient is φ = 57459864000.

The previous prime is 101023230013. The next prime is 101023230043. The reversal of 101023230021 is 120032320101.

It is not a de Polignac number, because 101023230021 - 2³ = 101023230013 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (101023230421) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 18361771 + ... + 18367271.

It is an arithmetic number, because the mean of its divisors is an integer number (4832956800).

Almost surely, 2^101023230021 is an apocalyptic number.

It is an amenable number.

101023230021 is a deficient number, since it is larger than the sum of its proper divisors (53631387579).

101023230021 is a wasteful number, since it uses less digits than its factorization.

101023230021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9409.

The product of its (nonzero) digits is 72, while the sum is 15.

Adding to 101023230021 its reverse (120032320101), we get a palindrome (221055550122).

The spelling of 101023230021 in words is "one hundred one billion, twenty-three million, two hundred thirty thousand, twenty-one".