22565221140 has 96 divisors (see below), whose sum is σ = 78773151744. Its totient is φ = 4688876160.

The previous prime is 22565221121. The next prime is 22565221141. The reversal of 22565221140 is 4112256522.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 22565221098 and 22565221107.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22565221141) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2437504 + ... + 2446743.

It is an arithmetic number, because the mean of its divisors is an integer number (820553664).

Almost surely, 2^22565221140 is an apocalyptic number.

22565221140 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22565221140 is an abundant number, since it is smaller than the sum of its proper divisors (56207930604).

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

22565221140 is a wasteful number, since it uses less digits than its factorization.

22565221140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4884277 (or 4884275 counting only the distinct ones).

The product of its (nonzero) digits is 9600, while the sum is 30.

Adding to 22565221140 its reverse (4112256522), we get a palindrome (26677477662).

The spelling of 22565221140 in words is "twenty-two billion, five hundred sixty-five million, two hundred twenty-one thousand, one hundred forty".