22200109 has 4 divisors (see below), whose sum is σ = 22965660. Its totient is φ = 21434560.

The previous prime is 22200077. The next prime is 22200119. The reversal of 22200109 is 90100222.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 15824484 + 6375625 = 3978^2 + 2525^2 .

It is a cyclic number.

It is not a de Polignac number, because 22200109 - 2⁵ = 22200077 is a prime.

It is a super-2 number, since 2×22200109² = 985689679223762, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 22200092 and 22200101.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22200119) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 382732 + ... + 382789.

It is an arithmetic number, because the mean of its divisors is an integer number (5741415).

Almost surely, 2^22200109 is an apocalyptic number.

22200109 is a gapful number since it is divisible by the number (29) formed by its first and last digit.

It is an amenable number.

22200109 is a deficient number, since it is larger than the sum of its proper divisors (765551).

22200109 is an equidigital number, since it uses as much as digits as its factorization.

22200109 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 765550.

The product of its (nonzero) digits is 72, while the sum is 16.

The square root of 22200109 is about 4711.6991627225. The cubic root of 22200109 is about 281.0509357478.

The spelling of 22200109 in words is "twenty-two million, two hundred thousand, one hundred nine".