120023210021 has 12 divisors (see below), whose sum is σ = 141781050720. Its totient is φ = 100718776080.

The previous prime is 120023210011. The next prime is 120023210023. The reversal of 120023210021 is 120012320021.

It is a happy number.

It is a de Polignac number, because none of the positive numbers 2^k-120023210021 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 120023209978 and 120023210005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (120023210023) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 32279801 + ... + 32283518.

It is an arithmetic number, because the mean of its divisors is an integer number (11815087560).

Almost surely, 2^120023210021 is an apocalyptic number.

120023210021 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

120023210021 is a deficient number, since it is larger than the sum of its proper divisors (21757840699).

120023210021 is a wasteful number, since it uses less digits than its factorization.

120023210021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 64563356 (or 64563343 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 14.

Adding to 120023210021 its reverse (120012320021), we get a palindrome (240035530042).

Subtracting from 120023210021 its reverse (120012320021), we obtain a square (10890000 = 3300²).

The spelling of 120023210021 in words is "one hundred twenty billion, twenty-three million, two hundred ten thousand, twenty-one".