22100122220 has 96 divisors (see below), whose sum is σ = 52965057600. Its totient is φ = 7671910400.

The previous prime is 22100122207. The next prime is 22100122223. The reversal of 22100122220 is 2222100122.

It is a junction number, because it is equal to n+sod(n) for n = 22100122195 and 22100122204.

It is not an unprimeable number, because it can be changed into a prime (22100122223) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 548360 + ... + 587280.

It is an arithmetic number, because the mean of its divisors is an integer number (551719350).

Almost surely, 2^22100122220 is an apocalyptic number.

22100122220 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 22100122220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (26482528800).

22100122220 is an abundant number, since it is smaller than the sum of its proper divisors (30864935380).

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

22100122220 is a wasteful number, since it uses less digits than its factorization.

22100122220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39059 (or 39057 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 14.

Adding to 22100122220 its reverse (2222100122), we get a palindrome (24322222342).

The spelling of 22100122220 in words is "twenty-two billion, one hundred million, one hundred twenty-two thousand, two hundred twenty".