120001013021 has 32 divisors (see below), whose sum is σ = 126618785280. Its totient is φ = 113622372864.

The previous prime is 120001013017. The next prime is 120001013063. The reversal of 120001013021 is 120310100021.

It is a cyclic number.

It is not a de Polignac number, because 120001013021 - 2² = 120001013017 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 120001012993 and 120001013011.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (120001013081) 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, 135901046 + ... + 135901928.

It is an arithmetic number, because the mean of its divisors is an integer number (3956837040).

Almost surely, 2^120001013021 is an apocalyptic number.

It is an amenable number.

120001013021 is a deficient number, since it is larger than the sum of its proper divisors (6617772259).

120001013021 is an equidigital number, since it uses as much as digits as its factorization.

120001013021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1685.

The product of its (nonzero) digits is 12, while the sum is 11.

Adding to 120001013021 its reverse (120310100021), we get a palindrome (240311113042).

The spelling of 120001013021 in words is "one hundred twenty billion, one million, thirteen thousand, twenty-one".