253121430012 has 48 divisors (see below), whose sum is σ = 659293041792. Its totient is φ = 74919660480.

The previous prime is 253121429879. The next prime is 253121430043. The reversal of 253121430012 is 210034121352.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 22291843 + ... + 22303194.

It is an arithmetic number, because the mean of its divisors is an integer number (13735271704).

Almost surely, 2^253121430012 is an apocalyptic number.

253121430012 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

253121430012 is an abundant number, since it is smaller than the sum of its proper divisors (406171611780).

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

253121430012 is a wasteful number, since it uses less digits than its factorization.

253121430012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44595098 (or 44595096 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 24.

Adding to 253121430012 its reverse (210034121352), we get a palindrome (463155551364).

The spelling of 253121430012 in words is "two hundred fifty-three billion, one hundred twenty-one million, four hundred thirty thousand, twelve".