120121311 has 16 divisors (see below), whose sum is σ = 165841920. Its totient is φ = 77256960.

The previous prime is 120121301. The next prime is 120121319. The reversal of 120121311 is 113121021.

It is not a de Polignac number, because 120121311 - 2⁶ = 120121247 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (120121319) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 31000 + ... + 34658.

It is an arithmetic number, because the mean of its divisors is an integer number (10365120).

Almost surely, 2^120121311 is an apocalyptic number.

120121311 is a deficient number, since it is larger than the sum of its proper divisors (45720609).

120121311 is a wasteful number, since it uses less digits than its factorization.

120121311 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4046.

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

The square root of 120121311 is about 10959.9868156855. The cubic root of 120121311 is about 493.4085692515.

Adding to 120121311 its reverse (113121021), we get a palindrome (233242332).

The spelling of 120121311 in words is "one hundred twenty million, one hundred twenty-one thousand, three hundred eleven".