251201413012 has 48 divisors (see below), whose sum is σ = 499589778240. Its totient is φ = 109509382400.

The previous prime is 251201413009. The next prime is 251201413027. The reversal of 251201413012 is 210314102152.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1073623 + ... + 1286494.

It is an arithmetic number, because the mean of its divisors is an integer number (10408120380).

Almost surely, 2^251201413012 is an apocalyptic number.

251201413012 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

251201413012 is a deficient number, since it is larger than the sum of its proper divisors (248388365228).

251201413012 is a wasteful number, since it uses less digits than its factorization.

251201413012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2360232 (or 2360230 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 22.

Adding to 251201413012 its reverse (210314102152), we get a palindrome (461515515164).

The spelling of 251201413012 in words is "two hundred fifty-one billion, two hundred one million, four hundred thirteen thousand, twelve".