22099921500 has 96 divisors (see below), whose sum is σ = 65261693952. Its totient is φ = 5810280000.

The previous prime is 22099921489. The next prime is 22099921513. The reversal of 22099921500 is 512999022.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2745 + ... + 210255.

It is an arithmetic number, because the mean of its divisors is an integer number (679809312).

Almost surely, 2^22099921500 is an apocalyptic number.

22099921500 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 22099921500, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (32630846976).

22099921500 is an abundant number, since it is smaller than the sum of its proper divisors (43161772452).

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

22099921500 is a wasteful number, since it uses less digits than its factorization.

22099921500 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 207604 (or 207592 counting only the distinct ones).

The product of its (nonzero) digits is 29160, while the sum is 39.

The spelling of 22099921500 in words is "twenty-two billion, ninety-nine million, nine hundred twenty-one thousand, five hundred".