22043440100 has 72 divisors (see below), whose sum is σ = 52558615200. Its totient is φ = 7958073600.

The previous prime is 22043440093. The next prime is 22043440141. The reversal of 22043440100 is 104434022.

It is a super-4 number, since 4×22043440100⁴ (a number of 42 digits) contains 4444 as substring.

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

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 80816 + ... + 224984.

Almost surely, 2^22043440100 is an apocalyptic number.

22043440100 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 22043440100, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (26279307600).

22043440100 is an abundant number, since it is smaller than the sum of its proper divisors (30515175100).

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

22043440100 is a wasteful number, since it uses less digits than its factorization.

22043440100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 144333 (or 144326 counting only the distinct ones).

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

Adding to 22043440100 its reverse (104434022), we get a palindrome (22147874122).

The spelling of 22043440100 in words is "twenty-two billion, forty-three million, four hundred forty thousand, one hundred".