22102202221 has 16 divisors (see below), whose sum is σ = 24251123520. Its totient is φ = 19976814720.

The previous prime is 22102202203. The next prime is 22102202237. The reversal of 22102202221 is 12220220122.

It is a cyclic number.

It is not a de Polignac number, because 22102202221 - 2¹⁷ = 22102071149 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 22102202195 and 22102202204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22102202201) 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 15 ways as a sum of consecutive naturals, for example, 1811086 + ... + 1823248.

It is an arithmetic number, because the mean of its divisors is an integer number (1515695220).

Almost surely, 2^22102202221 is an apocalyptic number.

It is an amenable number.

22102202221 is a deficient number, since it is larger than the sum of its proper divisors (2148921299).

22102202221 is a wasteful number, since it uses less digits than its factorization.

22102202221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13116.

The product of its (nonzero) digits is 128, while the sum is 16.

Adding to 22102202221 its reverse (12220220122), we get a palindrome (34322422343).

The spelling of 22102202221 in words is "twenty-two billion, one hundred two million, two hundred two thousand, two hundred twenty-one".