120121220939 has 2 divisors, whose sum is σ = 120121220940. Its totient is φ = 120121220938.

The previous prime is 120121220903. The next prime is 120121220951. The reversal of 120121220939 is 939022121021.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 120121220939 - 2⁸ = 120121220683 is a prime.

It is not a weakly prime, because it can be changed into another prime (120121220539) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60060610469 + 60060610470.

It is an arithmetic number, because the mean of its divisors is an integer number (60060610470).

Almost surely, 2^120121220939 is an apocalyptic number.

120121220939 is a deficient number, since it is larger than the sum of its proper divisors (1).

120121220939 is an equidigital number, since it uses as much as digits as its factorization.

120121220939 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3888, while the sum is 32.

The spelling of 120121220939 in words is "one hundred twenty billion, one hundred twenty-one million, two hundred twenty thousand, nine hundred thirty-nine".