22199471800 has 96 divisors (see below), whose sum is σ = 57146699520. Its totient is φ = 7951996800.

The previous prime is 22199471779. The next prime is 22199471803. The reversal of 22199471800 is 817499122.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22199471803) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 72097 + ... + 222703.

It is an arithmetic number, because the mean of its divisors is an integer number (595278120).

Almost surely, 2^22199471800 is an apocalyptic number.

22199471800 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 22199471800, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (28573349760).

22199471800 is an abundant number, since it is smaller than the sum of its proper divisors (34947227720).

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

22199471800 is a wasteful number, since it uses less digits than its factorization.

22199471800 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 150701 (or 150692 counting only the distinct ones).

The product of its (nonzero) digits is 72576, while the sum is 43.

The spelling of 22199471800 in words is "twenty-two billion, one hundred ninety-nine million, four hundred seventy-one thousand, eight hundred".