22222040220 has 36 divisors (see below), whose sum is σ = 67406855880. Its totient is φ = 5925877344.

The previous prime is 22222040207. The next prime is 22222040317. The reversal of 22222040220 is 2204022222.

It is a happy number.

22222040220 is a `hidden beast` number, since 2 + 22 + 220 + 402 + 20 = 666.

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 22222040193 and 22222040202.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 61727710 + ... + 61728069.

Almost surely, 2^22222040220 is an apocalyptic number.

22222040220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22222040220 is an abundant number, since it is smaller than the sum of its proper divisors (45184815660).

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

22222040220 is a wasteful number, since it uses less digits than its factorization.

22222040220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 123455794 (or 123455789 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 18.

Adding to 22222040220 its reverse (2204022222), we get a palindrome (24426062442).

The spelling of 22222040220 in words is "twenty-two billion, two hundred twenty-two million, forty thousand, two hundred twenty".