120023031021 has 32 divisors (see below), whose sum is σ = 162219760128. Its totient is φ = 78928711680.

The previous prime is 120023031013. The next prime is 120023031031. The reversal of 120023031021 is 120130320021.

It is not a de Polignac number, because 120023031021 - 2³ = 120023031013 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 (120023031031) 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, 80714140 + ... + 80715626.

It is an arithmetic number, because the mean of its divisors is an integer number (5069367504).

Almost surely, 2^120023031021 is an apocalyptic number.

It is an amenable number.

120023031021 is a deficient number, since it is larger than the sum of its proper divisors (42196729107).

120023031021 is a wasteful number, since it uses less digits than its factorization.

120023031021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2581.

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

Adding to 120023031021 its reverse (120130320021), we get a palindrome (240153351042).

The spelling of 120023031021 in words is "one hundred twenty billion, twenty-three million, thirty-one thousand, twenty-one".