22220404100 has 18 divisors (see below), whose sum is σ = 48218277114. Its totient is φ = 8888161600.

The previous prime is 22220404091. The next prime is 22220404109. The reversal of 22220404100 is 140402222.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (22220404091) and next prime (22220404109).

It can be written as a sum of positive squares in 3 ways, for example, as 2330379076 + 19890025024 = 48274^2 + 141032^2 .

It is not an unprimeable number, because it can be changed into a prime (22220404109) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 111101921 + ... + 111102120.

It is an arithmetic number, because the mean of its divisors is an integer number (2678793173).

Almost surely, 2^22220404100 is an apocalyptic number.

22220404100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22220404100 is an abundant number, since it is smaller than the sum of its proper divisors (25997873014).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

22220404100 is a wasteful number, since it uses less digits than its factorization.

22220404100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 222204055 (or 222204048 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 17.

Adding to 22220404100 its reverse (140402222), we get a palindrome (22360806322).

The spelling of 22220404100 in words is "twenty-two billion, two hundred twenty million, four hundred four thousand, one hundred".