22100221222 has 16 divisors (see below), whose sum is σ = 36020736000. Its totient is φ = 10130830920.

The previous prime is 22100221211. The next prime is 22100221229. The reversal of 22100221222 is 22212200122.

It is a super-2 number, since 2×22100221222² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 22100221196 and 22100221205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22100221229) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9379222 + ... + 9381577.

It is an arithmetic number, because the mean of its divisors is an integer number (2251296000).

Almost surely, 2^22100221222 is an apocalyptic number.

22100221222 is a deficient number, since it is larger than the sum of its proper divisors (13920514778).

22100221222 is a wasteful number, since it uses less digits than its factorization.

22100221222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18760851.

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

Adding to 22100221222 its reverse (22212200122), we get a palindrome (44312421344).

The spelling of 22100221222 in words is "twenty-two billion, one hundred million, two hundred twenty-one thousand, two hundred twenty-two".