22217272780 has 24 divisors (see below), whose sum is σ = 46692299808. Its totient is φ = 8880046848.

The previous prime is 22217272771. The next prime is 22217272801. The reversal of 22217272780 is 8727271222.

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, 402304 + ... + 454183.

It is an arithmetic number, because the mean of its divisors is an integer number (1945512492).

Almost surely, 2^22217272780 is an apocalyptic number.

22217272780 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22217272780 is an abundant number, since it is smaller than the sum of its proper divisors (24475027028).

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

22217272780 is a wasteful number, since it uses less digits than its factorization.

22217272780 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 857793 (or 857791 counting only the distinct ones).

The product of its (nonzero) digits is 87808, while the sum is 40.

The spelling of 22217272780 in words is "twenty-two billion, two hundred seventeen million, two hundred seventy-two thousand, seven hundred eighty".