120120012121 has 4 divisors (see below), whose sum is σ = 120150635472. Its totient is φ = 120089388772.

The previous prime is 120120012097. The next prime is 120120012137. The reversal of 120120012121 is 121210021021.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 120120012121 - 2²⁷ = 119985794393 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (120120012161) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15305791 + ... + 15313636.

It is an arithmetic number, because the mean of its divisors is an integer number (30037658868).

Almost surely, 2^120120012121 is an apocalyptic number.

It is an amenable number.

120120012121 is a deficient number, since it is larger than the sum of its proper divisors (30623351).

120120012121 is an equidigital number, since it uses as much as digits as its factorization.

120120012121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30623350.

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 120120012121 its reverse (121210021021), we get a palindrome (241330033142).

The spelling of 120120012121 in words is "one hundred twenty billion, one hundred twenty million, twelve thousand, one hundred twenty-one".