502112221 has 32 divisors (see below), whose sum is σ = 606735360. Its totient is φ = 410489856.

The previous prime is 502112203. The next prime is 502112227. The reversal of 502112221 is 122211205.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 502112221 - 2⁵ = 502112189 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 502112195 and 502112204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (502112227) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 826900 + ... + 827506.

It is an arithmetic number, because the mean of its divisors is an integer number (18960480).

Almost surely, 2^502112221 is an apocalyptic number.

It is an amenable number.

502112221 is a deficient number, since it is larger than the sum of its proper divisors (104623139).

502112221 is a wasteful number, since it uses less digits than its factorization.

502112221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 853.

The product of its (nonzero) digits is 80, while the sum is 16.

The square root of 502112221 is about 22407.8606966395. The cubic root of 502112221 is about 794.8166031344.

Subtracting from 502112221 its sum of digits (16), we obtain a triangular number (502112205 = T₃₁₆₈₉).

Adding to 502112221 its reverse (122211205), we get a palindrome (624323426).

The spelling of 502112221 in words is "five hundred two million, one hundred twelve thousand, two hundred twenty-one".