22102220100 has 144 divisors (see below), whose sum is σ = 66792600000. Its totient is φ = 5637265920.

The previous prime is 22102220059. The next prime is 22102220191. The reversal of 22102220100 is 102220122.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 638026 + ... + 671774.

It is an arithmetic number, because the mean of its divisors is an integer number (463837500).

Almost surely, 2^22102220100 is an apocalyptic number.

22102220100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 22102220100, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (33396300000).

22102220100 is an abundant number, since it is smaller than the sum of its proper divisors (44690379900).

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

22102220100 is a wasteful number, since it uses less digits than its factorization.

22102220100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33862 (or 33855 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 12.

Adding to 22102220100 its reverse (102220122), we get a palindrome (22204440222).

The spelling of 22102220100 in words is "twenty-two billion, one hundred two million, two hundred twenty thousand, one hundred".