22222200020 has 12 divisors (see below), whose sum is σ = 46666620084. Its totient is φ = 8888880000.

The previous prime is 22222199999. The next prime is 22222200023. The reversal of 22222200020 is 2000222222.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 13496398276 + 8725801744 = 116174^2 + 93412^2 .

It is a hoax number, since the sum of its digits (14) coincides with the sum of the digits of its distinct prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 22222199968 and 22222200004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22222200023) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 555554981 + ... + 555555020.

It is an arithmetic number, because the mean of its divisors is an integer number (3888885007).

Almost surely, 2^22222200020 is an apocalyptic number.

22222200020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22222200020 is an abundant number, since it is smaller than the sum of its proper divisors (24444420064).

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

22222200020 is a wasteful number, since it uses less digits than its factorization.

22222200020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1111110010 (or 1111110008 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 14.

Adding to 22222200020 its reverse (2000222222), we get a palindrome (24222422242).

The spelling of 22222200020 in words is "twenty-two billion, two hundred twenty-two million, two hundred thousand, twenty".