22200400100 has 72 divisors (see below), whose sum is σ = 49141521408. Its totient is φ = 8703676800.

The previous prime is 22200400087. The next prime is 22200400111. The reversal of 22200400100 is 100400222.

It is an unprimeable number.

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 23 ways as a sum of consecutive naturals, for example, 1043570 + ... + 1064630.

Almost surely, 2^22200400100 is an apocalyptic number.

22200400100 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 22200400100, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (24570760704).

22200400100 is an abundant number, since it is smaller than the sum of its proper divisors (26941121308).

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

22200400100 is a wasteful number, since it uses less digits than its factorization.

22200400100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21285 (or 21278 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 11.

Adding to 22200400100 its reverse (100400222), we get a palindrome (22300800322).

The spelling of 22200400100 in words is "twenty-two billion, two hundred million, four hundred thousand, one hundred".