22120254040 has 64 divisors (see below), whose sum is σ = 50925542400. Its totient is φ = 8644620672.

The previous prime is 22120254029. The next prime is 22120254047. The reversal of 22120254040 is 4045202122.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22120254047) 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, 355929 + ... + 413431.

It is an arithmetic number, because the mean of its divisors is an integer number (795711600).

Almost surely, 2^22120254040 is an apocalyptic number.

22120254040 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 22120254040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (25462771200).

22120254040 is an abundant number, since it is smaller than the sum of its proper divisors (28805288360).

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

22120254040 is a wasteful number, since it uses less digits than its factorization.

22120254040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57736 (or 57732 counting only the distinct ones).

The product of its (nonzero) digits is 1280, while the sum is 22.

Adding to 22120254040 its reverse (4045202122), we get a palindrome (26165456162).

The spelling of 22120254040 in words is "twenty-two billion, one hundred twenty million, two hundred fifty-four thousand, forty".