120218922021 has 16 divisors (see below), whose sum is σ = 174871476288. Its totient is φ = 72856790400.

The previous prime is 120218922013. The next prime is 120218922029. The reversal of 120218922021 is 120229812021.

It is an interprime number because it is at equal distance from previous prime (120218922013) and next prime (120218922029).

It is not a de Polignac number, because 120218922021 - 2³ = 120218922013 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 120218922021.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (120218922029) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 858841 + ... + 988961.

It is an arithmetic number, because the mean of its divisors is an integer number (10929467268).

Almost surely, 2^120218922021 is an apocalyptic number.

120218922021 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

120218922021 is a deficient number, since it is larger than the sum of its proper divisors (54652554267).

120218922021 is a wasteful number, since it uses less digits than its factorization.

120218922021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 158132.

The product of its (nonzero) digits is 2304, while the sum is 30.

Subtracting 120218922021 from its reverse (120229812021), we obtain a square (10890000 = 3300²).

The spelling of 120218922021 in words is "one hundred twenty billion, two hundred eighteen million, nine hundred twenty-two thousand, twenty-one".