22132232220 has 96 divisors (see below), whose sum is σ = 72023616000. Its totient is φ = 4973048064.

The previous prime is 22132232207. The next prime is 22132232231. The reversal of 22132232220 is 2223223122.

It is a super-2 number, since 2×22132232220² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 421795 + ... + 471354.

It is an arithmetic number, because the mean of its divisors is an integer number (750246000).

Almost surely, 2^22132232220 is an apocalyptic number.

22132232220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22132232220 is an abundant number, since it is smaller than the sum of its proper divisors (49891383780).

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

22132232220 is a wasteful number, since it uses less digits than its factorization.

22132232220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 893227 (or 893225 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 21.

Adding to 22132232220 its reverse (2223223122), we get a palindrome (24355455342).

The spelling of 22132232220 in words is "twenty-two billion, one hundred thirty-two million, two hundred thirty-two thousand, two hundred twenty".