222122210220 has 72 divisors (see below), whose sum is σ = 673809523296. Its totient is φ = 59229176832.

The previous prime is 222122210183. The next prime is 222122210237. The reversal of 222122210220 is 22012221222.

222122210220 is a `hidden beast` number, since 2 + 221 + 2 + 221 + 0 + 220 = 666.

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 = 222122210193 and 222122210202.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 5398044 + ... + 5439036.

Almost surely, 2^222122210220 is an apocalyptic number.

222122210220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

222122210220 is an abundant number, since it is smaller than the sum of its proper divisors (451687313076).

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

222122210220 is a wasteful number, since it uses less digits than its factorization.

222122210220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 71111 (or 71106 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 18.

Adding to 222122210220 its reverse (22012221222), we get a palindrome (244134431442).

The spelling of 222122210220 in words is "two hundred twenty-two billion, one hundred twenty-two million, two hundred ten thousand, two hundred twenty".