120221904 has 40 divisors (see below), whose sum is σ = 338808672. Its totient is φ = 36430720.

The previous prime is 120221891. The next prime is 120221923. The reversal of 120221904 is 409122021.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 113319 + ... + 114374.

Almost surely, 2^120221904 is an apocalyptic number.

It is an amenable number.

120221904 is an abundant number, since it is smaller than the sum of its proper divisors (218586768).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

120221904 is a wasteful number, since it uses less digits than its factorization.

120221904 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 227715 (or 227709 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 21.

The square root of 120221904 is about 10964.5749575622. The cubic root of 120221904 is about 493.5462622760.

Adding to 120221904 its reverse (409122021), we get a palindrome (529343925).

The spelling of 120221904 in words is "one hundred twenty million, two hundred twenty-one thousand, nine hundred four".