22222745312 has 48 divisors (see below), whose sum is σ = 45292464000. Its totient is φ = 10721963520.

The previous prime is 22222745297. The next prime is 22222745351. The reversal of 22222745312 is 21354722222.

It is a Harshad number since it is a multiple of its sum of digits (32).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 314114 + ... + 378302.

It is an arithmetic number, because the mean of its divisors is an integer number (943593000).

Almost surely, 2^22222745312 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 22222745312, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (22646232000).

22222745312 is an abundant number, since it is smaller than the sum of its proper divisors (23069718688).

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

22222745312 is a wasteful number, since it uses less digits than its factorization.

22222745312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 64579 (or 64571 counting only the distinct ones).

The product of its digits is 26880, while the sum is 32.

The spelling of 22222745312 in words is "twenty-two billion, two hundred twenty-two million, seven hundred forty-five thousand, three hundred twelve".