120331120021 has 16 divisors (see below), whose sum is σ = 147378864384. Its totient is φ = 95990171904.

The previous prime is 120331120001. The next prime is 120331120057. The reversal of 120331120021 is 120021133021.

It is a cyclic number.

It is not a de Polignac number, because 120331120021 - 2⁵ = 120331119989 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 120331119977 and 120331120004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (120331120001) 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, 10094020 + ... + 10105933.

It is an arithmetic number, because the mean of its divisors is an integer number (9211179024).

Almost surely, 2^120331120021 is an apocalyptic number.

It is an amenable number.

120331120021 is a deficient number, since it is larger than the sum of its proper divisors (27047744363).

120331120021 is a wasteful number, since it uses less digits than its factorization.

120331120021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20200020.

The product of its (nonzero) digits is 72, while the sum is 16.

Adding to 120331120021 its reverse (120021133021), we get a palindrome (240352253042).

The spelling of 120331120021 in words is "one hundred twenty billion, three hundred thirty-one million, one hundred twenty thousand, twenty-one".