22240040020 has 48 divisors (see below), whose sum is σ = 51785185536. Its totient is φ = 7954704000.

The previous prime is 22240039993. The next prime is 22240040021. The reversal of 22240040020 is 2004004222.

It is a junction number, because it is equal to n+sod(n) for n = 22240039976 and 22240040003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22240040021) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 815196 + ... + 842035.

It is an arithmetic number, because the mean of its divisors is an integer number (1078858032).

Almost surely, 2^22240040020 is an apocalyptic number.

22240040020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22240040020 is an abundant number, since it is smaller than the sum of its proper divisors (29545145516).

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

22240040020 is a wasteful number, since it uses less digits than its factorization.

22240040020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1657312 (or 1657310 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 16.

Adding to 22240040020 its reverse (2004004222), we get a palindrome (24244044242).

It can be divided in two parts, 22 and 240040020, that added together give a palindrome (240040042).

The spelling of 22240040020 in words is "twenty-two billion, two hundred forty million, forty thousand, twenty".