202212520 has 32 divisors (see below), whose sum is σ = 456298920. Its totient is φ = 80650240.

The previous prime is 202212509. The next prime is 202212553. The reversal of 202212520 is 25212202.

It can be written as a sum of positive squares in 4 ways, for example, as 88021924 + 114190596 = 9382^2 + 10686^2 .

It is a junction number, because it is equal to n+sod(n) for n = 202212494 and 202212503.

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, 6960 + ... + 21280.

Almost surely, 2^202212520 is an apocalyptic number.

202212520 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

202212520 is an abundant number, since it is smaller than the sum of its proper divisors (254086400).

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

202212520 is a wasteful number, since it uses less digits than its factorization.

202212520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14685 (or 14681 counting only the distinct ones).

The product of its (nonzero) digits is 160, while the sum is 16.

The square root of 202212520 is about 14220.1448656475. The cubic root of 202212520 is about 586.9521266318.

Adding to 202212520 its reverse (25212202), we get a palindrome (227424722).

The spelling of 202212520 in words is "two hundred two million, two hundred twelve thousand, five hundred twenty".