22440040220 has 48 divisors (see below), whose sum is σ = 50777807808. Its totient is φ = 8280852480.

The previous prime is 22440040219. The next prime is 22440040241. The reversal of 22440040220 is 2204004422.

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 = 22440040192 and 22440040201.

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 15 ways as a sum of consecutive naturals, for example, 452492 + ... + 499628.

It is an arithmetic number, because the mean of its divisors is an integer number (1057870996).

Almost surely, 2^22440040220 is an apocalyptic number.

22440040220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22440040220 is an abundant number, since it is smaller than the sum of its proper divisors (28337767588).

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

22440040220 is a wasteful number, since it uses less digits than its factorization.

22440040220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48990 (or 48988 counting only the distinct ones).

The product of its (nonzero) digits is 1024, while the sum is 20.

Adding to 22440040220 its reverse (2204004422), we get a palindrome (24644044642).

The spelling of 22440040220 in words is "twenty-two billion, four hundred forty million, forty thousand, two hundred twenty".