22042220220 has 36 divisors (see below), whose sum is σ = 66861401880. Its totient is φ = 5877925344.

The previous prime is 22042220219. The next prime is 22042220293. The reversal of 22042220220 is 2202224022.

It is a happy number.

22042220220 is a `hidden beast` number, since 2 + 2 + 0 + 422 + 20 + 220 = 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 = 22042220193 and 22042220202.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 61228210 + ... + 61228569.

Almost surely, 2^22042220220 is an apocalyptic number.

22042220220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22042220220 is an abundant number, since it is smaller than the sum of its proper divisors (44819181660).

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

22042220220 is a wasteful number, since it uses less digits than its factorization.

22042220220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 122456794 (or 122456789 counting only the distinct ones).

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

Adding to 22042220220 its reverse (2202224022), we get a palindrome (24244444242).

The spelling of 22042220220 in words is "twenty-two billion, forty-two million, two hundred twenty thousand, two hundred twenty".