253121303212 has 24 divisors (see below), whose sum is σ = 444314052000. Its totient is φ = 126174619776.

The previous prime is 253121303159. The next prime is 253121303317. The reversal of 253121303212 is 212303121352.

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, 5913664 + ... + 5956312.

It is an arithmetic number, because the mean of its divisors is an integer number (18513085500).

Almost surely, 2^253121303212 is an apocalyptic number.

It is an amenable number.

253121303212 is a deficient number, since it is larger than the sum of its proper divisors (191192748788).

253121303212 is a wasteful number, since it uses less digits than its factorization.

253121303212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47145 (or 47143 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 25.

Adding to 253121303212 its reverse (212303121352), we get a palindrome (465424424564).

The spelling of 253121303212 in words is "two hundred fifty-three billion, one hundred twenty-one million, three hundred three thousand, two hundred twelve".