22122200 has 48 divisors (see below), whose sum is σ = 52429680. Its totient is φ = 8677760.

The previous prime is 22122173. The next prime is 22122203. The reversal of 22122200 is 222122.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22122203) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 9557 + ... + 11643.

It is an arithmetic number, because the mean of its divisors is an integer number (1092285).

Almost surely, 2^22122200 is an apocalyptic number.

22122200 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 22122200, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (26214840).

22122200 is an abundant number, since it is smaller than the sum of its proper divisors (30307480).

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

22122200 is a wasteful number, since it uses less digits than its factorization.

22122200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2156 (or 2147 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 11.

The square root of 22122200 is about 4703.4242844974. The cubic root of 22122200 is about 280.7217772769.

Adding to 22122200 its reverse (222122), we get a palindrome (22344322).

It can be divided in two parts, 22122 and 200, that added together give a palindrome (22322).

The spelling of 22122200 in words is "twenty-two million, one hundred twenty-two thousand, two hundred".