22055221040 has 40 divisors (see below), whose sum is σ = 51491207328. Its totient is φ = 8785474560.

The previous prime is 22055221009. The next prime is 22055221049. The reversal of 22055221040 is 4012255022.

It is a tau number, because it is divible by the number of its divisors (40).

It is a junction number, because it is equal to n+sod(n) for n = 22055220997 and 22055221015.

It is not an unprimeable number, because it can be changed into a prime (22055221049) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 552692 + ... + 591251.

Almost surely, 2^22055221040 is an apocalyptic number.

22055221040 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22055221040 is an abundant number, since it is smaller than the sum of its proper divisors (29435986288).

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

22055221040 is a wasteful number, since it uses less digits than its factorization.

22055221040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1144197 (or 1144191 counting only the distinct ones).

The product of its (nonzero) digits is 1600, while the sum is 23.

Adding to 22055221040 its reverse (4012255022), we get a palindrome (26067476062).

The spelling of 22055221040 in words is "twenty-two billion, fifty-five million, two hundred twenty-one thousand, forty".