502216121 has 16 divisors (see below), whose sum is σ = 558379008. Its totient is φ = 447862800.

The previous prime is 502216087. The next prime is 502216147. The reversal of 502216121 is 121612205.

It is a de Polignac number, because none of the positive numbers 2^k-502216121 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 502216093 and 502216102.

It is not an unprimeable number, because it can be changed into a prime (502216021) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 192536 + ... + 195126.

It is an arithmetic number, because the mean of its divisors is an integer number (34898688).

Almost surely, 2^502216121 is an apocalyptic number.

It is an amenable number.

502216121 is a deficient number, since it is larger than the sum of its proper divisors (56162887).

502216121 is a wasteful number, since it uses less digits than its factorization.

502216121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2932.

The product of its (nonzero) digits is 240, while the sum is 20.

The square root of 502216121 is about 22410.1789595710. The cubic root of 502216121 is about 794.8714220548.

Adding to 502216121 its reverse (121612205), we get a palindrome (623828326).

The spelling of 502216121 in words is "five hundred two million, two hundred sixteen thousand, one hundred twenty-one".