120221031021 has 48 divisors (see below), whose sum is σ = 200886706944. Its totient is φ = 63388676736.

The previous prime is 120221031017. The next prime is 120221031061. The reversal of 120221031021 is 120130122021.

It is not a de Polignac number, because 120221031021 - 2² = 120221031017 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 (120221031011) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 5582751 + ... + 5604243.

It is an arithmetic number, because the mean of its divisors is an integer number (4185139728).

Almost surely, 2^120221031021 is an apocalyptic number.

It is an amenable number.

120221031021 is a deficient number, since it is larger than the sum of its proper divisors (80665675923).

120221031021 is a wasteful number, since it uses less digits than its factorization.

120221031021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24450 (or 24443 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 15.

Adding to 120221031021 its reverse (120130122021), we get a palindrome (240351153042).

The spelling of 120221031021 in words is "one hundred twenty billion, two hundred twenty-one million, thirty-one thousand, twenty-one".