22331100 has 144 divisors (see below), whose sum is σ = 72245376. Its totient is φ = 5280000.

The previous prime is 22331053. The next prime is 22331159. The reversal of 22331100 is 113322.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a zygodrome in base 10.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 221050 + ... + 221150.

It is an arithmetic number, because the mean of its divisors is an integer number (501704).

Almost surely, 2^22331100 is an apocalyptic number.

22331100 is a gapful number since it is divisible by the number (20) 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 22331100, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (36122688).

22331100 is an abundant number, since it is smaller than the sum of its proper divisors (49914276).

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

22331100 is a wasteful number, since it uses less digits than its factorization.

22331100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 196 (or 189 counting only the distinct ones).

The product of its (nonzero) digits is 36, while the sum is 12.

The square root of 22331100 is about 4725.5793295637. The cubic root of 22331100 is about 281.6026292960.

Adding to 22331100 its reverse (113322), we get a palindrome (22444422).

It can be divided in two parts, 2233 and 1100, that added together give a palindrome (3333).

The spelling of 22331100 in words is "twenty-two million, three hundred thirty-one thousand, one hundred".