22251700000 has 144 divisors (see below), whose sum is σ = 56652077160. Its totient is φ = 8592640000.

The previous prime is 22251699983. The next prime is 22251700007. The reversal of 22251700000 is 715222.

It can be written as a sum of positive squares in 12 ways, for example, as 8535542544 + 13716157456 = 92388^2 + 117116^2 .

It is not an unprimeable number, because it can be changed into a prime (22251700007) by changing a digit.

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, 2896164 + ... + 2903836.

Almost surely, 2^22251700000 is an apocalyptic number.

22251700000 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 22251700000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (28326038580).

22251700000 is an abundant number, since it is smaller than the sum of its proper divisors (34400377160).

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

22251700000 is an frugal number, since it uses more digits than its factorization.

22251700000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7737 (or 7709 counting only the distinct ones).

The product of its (nonzero) digits is 280, while the sum is 19.

The spelling of 22251700000 in words is "twenty-two billion, two hundred fifty-one million, seven hundred thousand".