120521203 has 12 divisors (see below), whose sum is σ = 133229824. Its totient is φ = 108939600.

The previous prime is 120521153. The next prime is 120521209. The reversal of 120521203 is 302125021.

It is not a de Polignac number, because 120521203 - 2²¹ = 118424051 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (120521209) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 19150 + ... + 24652.

Almost surely, 2^120521203 is an apocalyptic number.

120521203 is a deficient number, since it is larger than the sum of its proper divisors (12708621).

120521203 is a wasteful number, since it uses less digits than its factorization.

120521203 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5706 (or 5695 counting only the distinct ones).

The product of its (nonzero) digits is 120, while the sum is 16.

The square root of 120521203 is about 10978.2149277558. The cubic root of 120521203 is about 493.9554929934.

Adding to 120521203 its reverse (302125021), we get a palindrome (422646224).

The spelling of 120521203 in words is "one hundred twenty million, five hundred twenty-one thousand, two hundred three".