22128270012 has 24 divisors (see below), whose sum is σ = 57369589200. Its totient is φ = 7376089968.

The previous prime is 22128270007. The next prime is 22128270089. The reversal of 22128270012 is 21007282122.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

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, 102445587 + ... + 102445802.

It is an arithmetic number, because the mean of its divisors is an integer number (2390399550).

Almost surely, 2^22128270012 is an apocalyptic number.

It is an amenable number.

22128270012 is an abundant number, since it is smaller than the sum of its proper divisors (35241319188).

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

22128270012 is a wasteful number, since it uses less digits than its factorization.

22128270012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 204891402 (or 204891394 counting only the distinct ones).

The product of its (nonzero) digits is 1792, while the sum is 27.

The spelling of 22128270012 in words is "twenty-two billion, one hundred twenty-eight million, two hundred seventy thousand, twelve".