22143220044 has 48 divisors (see below), whose sum is σ = 56702128896. Its totient is φ = 6669880000.

The previous prime is 22143219997. The next prime is 22143220061. The reversal of 22143220044 is 44002234122.

It is a junction number, because it is equal to n+sod(n) for n = 22143219996 and 22143220023.

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 15 ways as a sum of consecutive naturals, for example, 480207 + ... + 524294.

It is an arithmetic number, because the mean of its divisors is an integer number (1181294352).

Almost surely, 2^22143220044 is an apocalyptic number.

It is an amenable number.

22143220044 is an abundant number, since it is smaller than the sum of its proper divisors (34558908852).

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

22143220044 is a wasteful number, since it uses less digits than its factorization.

22143220044 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1004686 (or 1004684 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 24.

Adding to 22143220044 its reverse (44002234122), we get a palindrome (66145454166).

The spelling of 22143220044 in words is "twenty-two billion, one hundred forty-three million, two hundred twenty thousand, forty-four".