22221331132 has 96 divisors (see below), whose sum is σ = 52258881024. Its totient is φ = 7984569600.

The previous prime is 22221331109. The next prime is 22221331157. The reversal of 22221331132 is 23113312222.

It is a Harshad number since it is a multiple of its sum of digits (22).

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, 6897282 + ... + 6900502.

It is an arithmetic number, because the mean of its divisors is an integer number (544363344).

Almost surely, 2^22221331132 is an apocalyptic number.

22221331132 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 22221331132, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (26129440512).

22221331132 is an abundant number, since it is smaller than the sum of its proper divisors (30037549892).

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

22221331132 is a wasteful number, since it uses less digits than its factorization.

22221331132 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4979 (or 4977 counting only the distinct ones).

The product of its digits is 864, while the sum is 22.

Adding to 22221331132 its reverse (23113312222), we get a palindrome (45334643354).

It can be divided in two parts, 22221 and 331132, that added together give a palindrome (353353).

The spelling of 22221331132 in words is "twenty-two billion, two hundred twenty-one million, three hundred thirty-one thousand, one hundred thirty-two".