22200112221 has 32 divisors (see below), whose sum is σ = 36571637760. Its totient is φ = 11693284416.

The previous prime is 22200112189. The next prime is 22200112267. The reversal of 22200112221 is 12221100222.

It is not a de Polignac number, because 22200112221 - 2⁵ = 22200112189 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 22200112221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22200112021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 737121 + ... + 766646.

It is an arithmetic number, because the mean of its divisors is an integer number (1142863680).

Almost surely, 2^22200112221 is an apocalyptic number.

22200112221 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

22200112221 is a deficient number, since it is larger than the sum of its proper divisors (14371525539).

22200112221 is a wasteful number, since it uses less digits than its factorization.

22200112221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1503833.

The product of its (nonzero) digits is 64, while the sum is 15.

Adding to 22200112221 its reverse (12221100222), we get a palindrome (34421212443).

It can be divided in two parts, 22200 and 112221, that added together give a triangular number (134421 = T₅₁₈).

The spelling of 22200112221 in words is "twenty-two billion, two hundred million, one hundred twelve thousand, two hundred twenty-one".