12220705885544 has 32 divisors (see below), whose sum is σ = 24714922244040. Its totient is φ = 5631526502400.

The previous prime is 12220705885441. The next prime is 12220705885561. The reversal of 12220705885544 is 44558850702221.

It can be written as a sum of positive squares in 4 ways, for example, as 10060505548900 + 2160200336644 = 3171830^2 + 1469762^2 .

It is a super-2 number, since 2×12220705885544² (a number of 27 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 91592297 + ... + 91725624.

Almost surely, 2^{12220705885544} is an apocalyptic number.

It is an amenable number.

12220705885544 is an abundant number, since it is smaller than the sum of its proper divisors (12494216358496).

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

12220705885544 is a wasteful number, since it uses less digits than its factorization.

12220705885544 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 183318581 (or 183318577 counting only the distinct ones).

The product of its (nonzero) digits is 7168000, while the sum is 53.

The spelling of 12220705885544 in words is "twelve trillion, two hundred twenty billion, seven hundred five million, eight hundred eighty-five thousand, five hundred forty-four".