22100205 has 16 divisors (see below), whose sum is σ = 36028800. Its totient is φ = 11563968.

The previous prime is 22100203. The next prime is 22100207. The reversal of 22100205 is 50200122.

It is an interprime number because it is at equal distance from previous prime (22100203) and next prime (22100207).

It is not a de Polignac number, because 22100205 - 2¹ = 22100203 is a prime.

It is a super-2 number, since 2×22100205² = 976838122084050, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22100203) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13105 + ... + 14694.

It is an arithmetic number, because the mean of its divisors is an integer number (2251800).

Almost surely, 2^22100205 is an apocalyptic number.

It is an amenable number.

22100205 is a deficient number, since it is larger than the sum of its proper divisors (13928595).

22100205 is a wasteful number, since it uses less digits than its factorization.

22100205 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27860.

The product of its (nonzero) digits is 40, while the sum is 12.

The square root of 22100205 is about 4701.0855129427. The cubic root of 22100205 is about 280.6287105393.

Adding to 22100205 its reverse (50200122), we get a palindrome (72300327).

The spelling of 22100205 in words is "twenty-two million, one hundred thousand, two hundred five".