213120502 has 12 divisors (see below), whose sum is σ = 371873700. Its totient is φ = 91337316.

The previous prime is 213120491. The next prime is 213120527. The reversal of 213120502 is 205021312.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1087252 + ... + 1087447.

It is an arithmetic number, because the mean of its divisors is an integer number (30989475).

Almost surely, 2^213120502 is an apocalyptic number.

213120502 is a deficient number, since it is larger than the sum of its proper divisors (158753198).

213120502 is a wasteful number, since it uses less digits than its factorization.

213120502 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2174715 (or 2174708 counting only the distinct ones).

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

The square root of 213120502 is about 14598.6472660997. The cubic root of 213120502 is about 597.3218618945.

Adding to 213120502 its reverse (205021312), we get a palindrome (418141814).

The spelling of 213120502 in words is "two hundred thirteen million, one hundred twenty thousand, five hundred two".