22222227777780 has 24 divisors (see below), whose sum is σ = 62222237777952. Its totient is φ = 5925927407392.

The previous prime is 22222227777779. The next prime is 22222227777803. The reversal of 22222227777780 is 8777772222222.

It is a self number, because there is not a number n which added to its sum of digits gives 22222227777780.

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, 185185231422 + ... + 185185231541.

It is an arithmetic number, because the mean of its divisors is an integer number (2592593240748).

Almost surely, 2^{22222227777780} is an apocalyptic number.

22222227777780 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22222227777780 is an abundant number, since it is smaller than the sum of its proper divisors (40000010000172).

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

22222227777780 is a wasteful number, since it uses less digits than its factorization.

22222227777780 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 370370462975 (or 370370462973 counting only the distinct ones).

The product of its (nonzero) digits is 17210368, while the sum is 57.

The spelling of 22222227777780 in words is "twenty-two trillion, two hundred twenty-two billion, two hundred twenty-seven million, seven hundred seventy-seven thousand, seven hundred eighty".