22122443000 has 256 divisors, whose sum is σ = 60836106240. Its totient is φ = 7373376000.

The previous prime is 22122442963. The next prime is 22122443087. The reversal of 22122443000 is 34422122.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 43980749 + ... + 43981251.

It is an arithmetic number, because the mean of its divisors is an integer number (237641040).

Almost surely, 2^22122443000 is an apocalyptic number.

22122443000 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 22122443000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (30418053120).

22122443000 is an abundant number, since it is smaller than the sum of its proper divisors (38713663240).

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

22122443000 is a wasteful number, since it uses less digits than its factorization.

22122443000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 695 (or 681 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 20.

Adding to 22122443000 its reverse (34422122), we get a palindrome (22156865122).

The spelling of 22122443000 in words is "twenty-two billion, one hundred twenty-two million, four hundred forty-three thousand".