22220251800 has 192 divisors, whose sum is σ = 70000519680. Its totient is φ = 5830026240.

The previous prime is 22220251799. The next prime is 22220251811. The reversal of 22220251800 is 815202222.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 10319524 + ... + 10321676.

It is an arithmetic number, because the mean of its divisors is an integer number (364586040).

Almost surely, 2^22220251800 is an apocalyptic number.

22220251800 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 22220251800, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (35000259840).

22220251800 is an abundant number, since it is smaller than the sum of its proper divisors (47780267880).

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

22220251800 is a wasteful number, since it uses less digits than its factorization.

22220251800 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2442 (or 2433 counting only the distinct ones).

The product of its (nonzero) digits is 1280, while the sum is 24.

The spelling of 22220251800 in words is "twenty-two billion, two hundred twenty million, two hundred fifty-one thousand, eight hundred".