253212135220 has 48 divisors (see below), whose sum is σ = 580138731648. Its totient is φ = 92068767360.

The previous prime is 253212135203. The next prime is 253212135227. The reversal of 253212135220 is 22531212352.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (253212135227) 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, 2701054 + ... + 2793226.

It is an arithmetic number, because the mean of its divisors is an integer number (12086223576).

Almost surely, 2^253212135220 is an apocalyptic number.

253212135220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

253212135220 is an abundant number, since it is smaller than the sum of its proper divisors (326926596428).

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

253212135220 is a wasteful number, since it uses less digits than its factorization.

253212135220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 104680 (or 104678 counting only the distinct ones).

The product of its (nonzero) digits is 7200, while the sum is 28.

Adding to 253212135220 its reverse (22531212352), we get a palindrome (275743347572).

The spelling of 253212135220 in words is "two hundred fifty-three billion, two hundred twelve million, one hundred thirty-five thousand, two hundred twenty".