22216573220 has 12 divisors (see below), whose sum is σ = 46654803804. Its totient is φ = 8886629280.

The previous prime is 22216573219. The next prime is 22216573229. The reversal of 22216573220 is 2237561222.

It can be written as a sum of positive squares in 2 ways, for example, as 6553550116 + 15663023104 = 80954^2 + 125152^2 .

It is a super-2 number, since 2×22216573220² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (22216573229) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 555414311 + ... + 555414350.

It is an arithmetic number, because the mean of its divisors is an integer number (3887900317).

Almost surely, 2^22216573220 is an apocalyptic number.

22216573220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22216573220 is an abundant number, since it is smaller than the sum of its proper divisors (24438230584).

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

22216573220 is a wasteful number, since it uses less digits than its factorization.

22216573220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1110828670 (or 1110828668 counting only the distinct ones).

The product of its (nonzero) digits is 20160, while the sum is 32.

The spelling of 22216573220 in words is "twenty-two billion, two hundred sixteen million, five hundred seventy-three thousand, two hundred twenty".