251303223012 has 24 divisors (see below), whose sum is σ = 586955359200. Its totient is φ = 83684716416.

The previous prime is 251303222977. The next prime is 251303223029. The reversal of 251303223012 is 210322303152.

It is a happy number.

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, 10365462 + ... + 10389677.

It is an arithmetic number, because the mean of its divisors is an integer number (24456473300).

Almost surely, 2^251303223012 is an apocalyptic number.

It is an amenable number.

251303223012 is an abundant number, since it is smaller than the sum of its proper divisors (335652136188).

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

251303223012 is a wasteful number, since it uses less digits than its factorization.

251303223012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20756155 (or 20756153 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 24.

Adding to 251303223012 its reverse (210322303152), we get a palindrome (461625526164).

The spelling of 251303223012 in words is "two hundred fifty-one billion, three hundred three million, two hundred twenty-three thousand, twelve".