120118921021 has 16 divisors (see below), whose sum is σ = 134730360576. Its totient is φ = 106142400000.

The previous prime is 120118921007. The next prime is 120118921031. The reversal of 120118921021 is 120129811021.

It is a cyclic number.

It is not a de Polignac number, because 120118921021 - 2⁵ = 120118920989 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (120118921031) 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, 369180 + ... + 613621.

It is an arithmetic number, because the mean of its divisors is an integer number (8420647536).

Almost surely, 2^120118921021 is an apocalyptic number.

120118921021 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

120118921021 is a deficient number, since it is larger than the sum of its proper divisors (14611439555).

120118921021 is a wasteful number, since it uses less digits than its factorization.

120118921021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 983124.

The product of its (nonzero) digits is 576, while the sum is 28.

Subtracting 120118921021 from its reverse (120129811021), we obtain a square (10890000 = 3300²).

The spelling of 120118921021 in words is "one hundred twenty billion, one hundred eighteen million, nine hundred twenty-one thousand, twenty-one".