22164031220 has 48 divisors (see below), whose sum is σ = 46825708608. Its totient is φ = 8812124160.

The previous prime is 22164031217. The next prime is 22164031249. The reversal of 22164031220 is 2213046122.

It is a happy number.

It is a super-2 number, since 2×22164031220² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7359515 + ... + 7362525.

It is an arithmetic number, because the mean of its divisors is an integer number (975535596).

Almost surely, 2^22164031220 is an apocalyptic number.

22164031220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22164031220 is an abundant number, since it is smaller than the sum of its proper divisors (24661677388).

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

22164031220 is a wasteful number, since it uses less digits than its factorization.

22164031220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5120 (or 5118 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 23.

Adding to 22164031220 its reverse (2213046122), we get a palindrome (24377077342).

The spelling of 22164031220 in words is "twenty-two billion, one hundred sixty-four million, thirty-one thousand, two hundred twenty".