22220455040 has 64 divisors (see below), whose sum is σ = 60709469760. Its totient is φ = 7618440192.

The previous prime is 22220455007. The next prime is 22220455091. The reversal of 22220455040 is 4055402222.

It is a tau number, because it is divible by the number of its divisors (64).

It is a super-2 number, since 2×22220455040² (a number of 21 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2475482 + ... + 2484441.

It is an arithmetic number, because the mean of its divisors is an integer number (948585465).

Almost surely, 2^22220455040 is an apocalyptic number.

22220455040 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22220455040 is an abundant number, since it is smaller than the sum of its proper divisors (38489014720).

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

22220455040 is an equidigital number, since it uses as much as digits as its factorization.

22220455040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4959949 (or 4959937 counting only the distinct ones).

The product of its (nonzero) digits is 6400, while the sum is 26.

Adding to 22220455040 its reverse (4055402222), we get a palindrome (26275857262).

The spelling of 22220455040 in words is "twenty-two billion, two hundred twenty million, four hundred fifty-five thousand, forty".