120221139 has 8 divisors (see below), whose sum is σ = 161278912. Its totient is φ = 79655400.

The previous prime is 120221137. The next prime is 120221147. The reversal of 120221139 is 931122021.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 120221139 - 2¹ = 120221137 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (120221137) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 122437 + ... + 123414.

It is an arithmetic number, because the mean of its divisors is an integer number (20159864).

Almost surely, 2^120221139 is an apocalyptic number.

120221139 is a deficient number, since it is larger than the sum of its proper divisors (41057773).

120221139 is a wasteful number, since it uses less digits than its factorization.

120221139 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 246017.

The product of its (nonzero) digits is 216, while the sum is 21.

The square root of 120221139 is about 10964.5400724335. The cubic root of 120221139 is about 493.5452154238.

The spelling of 120221139 in words is "one hundred twenty million, two hundred twenty-one thousand, one hundred thirty-nine".