2251320231522 has 32 divisors (see below), whose sum is σ = 4652970442560. Its totient is φ = 725730667200.

The previous prime is 2251320231499. The next prime is 2251320231533.

It is a happy number.

2251320231522 is nontrivially palindromic in base 10.

It is a self number, because there is not a number n which added to its sum of digits gives 2251320231522.

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, 43172197 + ... + 43224312.

It is an arithmetic number, because the mean of its divisors is an integer number (145405326330).

Almost surely, 2^{2251320231522} is an apocalyptic number.

2251320231522 is an abundant number, since it is smaller than the sum of its proper divisors (2401650211038).

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

2251320231522 is a wasteful number, since it uses less digits than its factorization.

2251320231522 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 86396658.

The product of its (nonzero) digits is 14400, while the sum is 30.

It can be divided in two parts, 2251320 and 231522, that added together give a palindrome (2482842).

The spelling of 2251320231522 in words is "two trillion, two hundred fifty-one billion, three hundred twenty million, two hundred thirty-one thousand, five hundred twenty-two".