22388223312 has 320 divisors, whose sum is σ = 81648107520. Its totient is φ = 5713804800.

The previous prime is 22388223259. The next prime is 22388223323. The reversal of 22388223312 is 21332288322.

It is a happy number.

22388223312 is a `hidden beast` number, since 22 + 388 + 223 + 31 + 2 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1209487 + ... + 1227857.

It is an arithmetic number, because the mean of its divisors is an integer number (255150336).

Almost surely, 2^22388223312 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 22388223312, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (40824053760).

22388223312 is an abundant number, since it is smaller than the sum of its proper divisors (59259884208).

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

22388223312 is a wasteful number, since it uses less digits than its factorization.

22388223312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18439 (or 18427 counting only the distinct ones).

The product of its digits is 55296, while the sum is 36.

The spelling of 22388223312 in words is "twenty-two billion, three hundred eighty-eight million, two hundred twenty-three thousand, three hundred twelve".