22400143220 has 96 divisors (see below), whose sum is σ = 59077536000. Its totient is φ = 7089247872.

The previous prime is 22400143219. The next prime is 22400143247. The reversal of 22400143220 is 2234100422.

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 = 22400143192 and 22400143201.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 36410 + ... + 214769.

It is an arithmetic number, because the mean of its divisors is an integer number (615391000).

Almost surely, 2^22400143220 is an apocalyptic number.

22400143220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22400143220 is an abundant number, since it is smaller than the sum of its proper divisors (36677392780).

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

22400143220 is a wasteful number, since it uses less digits than its factorization.

22400143220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 251222 (or 251206 counting only the distinct ones).

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

Adding to 22400143220 its reverse (2234100422), we get a palindrome (24634243642).

The spelling of 22400143220 in words is "twenty-two billion, four hundred million, one hundred forty-three thousand, two hundred twenty".