120013013121 has 4 divisors (see below), whose sum is σ = 160017350832. Its totient is φ = 80008675412.

The previous prime is 120013013077. The next prime is 120013013123. The reversal of 120013013121 is 121310310021.

It is a happy number.

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 120013013121 - 2¹³ = 120013004929 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 120013013121.

It is not an unprimeable number, because it can be changed into a prime (120013013123) 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, 20002168851 + ... + 20002168856.

It is an arithmetic number, because the mean of its divisors is an integer number (40004337708).

Almost surely, 2^120013013121 is an apocalyptic number.

It is an amenable number.

120013013121 is a deficient number, since it is larger than the sum of its proper divisors (40004337711).

120013013121 is an equidigital number, since it uses as much as digits as its factorization.

120013013121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40004337710.

The product of its (nonzero) digits is 36, while the sum is 15.

Adding to 120013013121 its reverse (121310310021), we get a palindrome (241323323142).

The spelling of 120013013121 in words is "one hundred twenty billion, thirteen million, thirteen thousand, one hundred twenty-one".