22004223140 has 12 divisors (see below), whose sum is σ = 46208868636. Its totient is φ = 8801689248.

The previous prime is 22004223127. The next prime is 22004223151. The reversal of 22004223140 is 4132240022.

It can be written as a sum of positive squares in 2 ways, for example, as 4276898404 + 17727324736 = 65398^2 + 133144^2 .

It is a super-2 number, since 2×22004223140² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (20), and also a Moran number because the ratio is a prime number: 1100211157 = 22004223140 / (2 + 2 + 0 + 0 + 4 + 2 + 2 + 3 + 1 + 4 + 0).

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 550105559 + ... + 550105598.

It is an arithmetic number, because the mean of its divisors is an integer number (3850739053).

Almost surely, 2^22004223140 is an apocalyptic number.

22004223140 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22004223140 is an abundant number, since it is smaller than the sum of its proper divisors (24204645496).

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

22004223140 is a wasteful number, since it uses less digits than its factorization.

22004223140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1100211166 (or 1100211164 counting only the distinct ones).

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

Adding to 22004223140 its reverse (4132240022), we get a palindrome (26136463162).

The spelling of 22004223140 in words is "twenty-two billion, four million, two hundred twenty-three thousand, one hundred forty".