12161325522 has 16 divisors (see below), whose sum is σ = 24342328512. Its totient is φ = 4050495600.

The previous prime is 12161325503. The next prime is 12161325557. The reversal of 12161325522 is 22552316121.

It is a self number, because there is not a number n which added to its sum of digits gives 12161325522.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 811854 + ... + 826697.

It is an arithmetic number, because the mean of its divisors is an integer number (1521395532).

Almost surely, 2^12161325522 is an apocalyptic number.

12161325522 is an abundant number, since it is smaller than the sum of its proper divisors (12181002990).

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

12161325522 is a wasteful number, since it uses less digits than its factorization.

12161325522 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1639793.

The product of its digits is 7200, while the sum is 30.

The spelling of 12161325522 in words is "twelve billion, one hundred sixty-one million, three hundred twenty-five thousand, five hundred twenty-two".