22161345132 has 24 divisors (see below), whose sum is σ = 51712367616. Its totient is φ = 7386749008.

The previous prime is 22161345127. The next prime is 22161345179. The reversal of 22161345132 is 23154316122.

It is a super-2 number, since 2×22161345132² (a number of 21 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 22161345132.

It is an unprimeable number.

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, 329833 + ... + 391295.

It is an arithmetic number, because the mean of its divisors is an integer number (2154681984).

Almost surely, 2^22161345132 is an apocalyptic number.

It is an amenable number.

22161345132 is an abundant number, since it is smaller than the sum of its proper divisors (29551022484).

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

22161345132 is a wasteful number, since it uses less digits than its factorization.

22161345132 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 91517 (or 91515 counting only the distinct ones).

The product of its digits is 8640, while the sum is 30.

The spelling of 22161345132 in words is "twenty-two billion, one hundred sixty-one million, three hundred forty-five thousand, one hundred thirty-two".