22400233220 has 24 divisors (see below), whose sum is σ = 47242390104. Its totient is φ = 8921636096.

The previous prime is 22400233199. The next prime is 22400233231. The reversal of 22400233220 is 2233200422.

It can be written as a sum of positive squares in 4 ways, for example, as 2622873796 + 19777359424 = 51214^2 + 140632^2 .

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

It is a junction number, because it is equal to n+sod(n) for n = 22400233192 and 22400233201.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2398799 + ... + 2408118.

It is an arithmetic number, because the mean of its divisors is an integer number (1968432921).

Almost surely, 2^22400233220 is an apocalyptic number.

22400233220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22400233220 is an abundant number, since it is smaller than the sum of its proper divisors (24842156884).

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

22400233220 is a wasteful number, since it uses less digits than its factorization.

22400233220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4807159 (or 4807157 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 20.

Adding to 22400233220 its reverse (2233200422), we get a palindrome (24633433642).

The spelling of 22400233220 in words is "twenty-two billion, four hundred million, two hundred thirty-three thousand, two hundred twenty".