2251314131521 has 8 divisors (see below), whose sum is σ = 2770848161984. Its totient is φ = 1781259532560.

The previous prime is 2251314131503. The next prime is 2251314131551. The reversal of 2251314131521 is 1251314131522.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2251314131521 - 2⁷ = 2251314131393 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2251314131551) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12369857775 + ... + 12369857956.

It is an arithmetic number, because the mean of its divisors is an integer number (346356020248).

Almost surely, 2^{2251314131521} is an apocalyptic number.

It is an amenable number.

2251314131521 is a deficient number, since it is larger than the sum of its proper divisors (519534030463).

2251314131521 is a wasteful number, since it uses less digits than its factorization.

2251314131521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24739715751.

The product of its digits is 7200, while the sum is 31.

Subtracting from 2251314131521 its reverse (1251314131522), we obtain a palindrome (999999999999).

The spelling of 2251314131521 in words is "two trillion, two hundred fifty-one billion, three hundred fourteen million, one hundred thirty-one thousand, five hundred twenty-one".