22204100 has 18 divisors (see below), whose sum is σ = 48183114. Its totient is φ = 8881600.

The previous prime is 22204099. The next prime is 22204109. The reversal of 22204100 is 140222.

It can be written as a sum of positive squares in 3 ways, for example, as 1156 + 22202944 = 34^2 + 4712^2 .

It is a super-3 number, since 3×22204100³ (a number of 23 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (22204109) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 110921 + ... + 111120.

Almost surely, 2^22204100 is an apocalyptic number.

22204100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22204100 is an abundant number, since it is smaller than the sum of its proper divisors (25979014).

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

22204100 is a wasteful number, since it uses less digits than its factorization.

22204100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 222055 (or 222048 counting only the distinct ones).

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

The square root of 22204100 is about 4712.1226639382. The cubic root of 22204100 is about 281.0677766122.

Adding to 22204100 its reverse (140222), we get a palindrome (22344322).

The spelling of 22204100 in words is "twenty-two million, two hundred four thousand, one hundred".