22042200 has 96 divisors (see below), whose sum is σ = 72383760. Its totient is φ = 5529600.

The previous prime is 22042199. The next prime is 22042213. The reversal of 22042200 is 224022.

It is a happy number.

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

It is a super Niven number, because it is divisible the sum of any subset of its (nonzero) digits.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 9120 + ... + 11280.

Almost surely, 2^22042200 is an apocalyptic number.

22042200 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 22042200, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (36191880).

22042200 is an abundant number, since it is smaller than the sum of its proper divisors (50341560).

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

22042200 is a wasteful number, since it uses less digits than its factorization.

22042200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2197 (or 2188 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 12.

The square root of 22042200 is about 4694.9121397530. The cubic root of 22042200 is about 280.3829793298.

Adding to 22042200 its reverse (224022), we get a palindrome (22266222).

The spelling of 22042200 in words is "twenty-two million, forty-two thousand, two hundred".