220222222020 has 72 divisors (see below), whose sum is σ = 668223967320. Its totient is φ = 58706887680.

The previous prime is 220222222009. The next prime is 220222222063. The reversal of 220222222020 is 20222222022.

220222222020 is a `hidden beast` number, since 2 + 202 + 222 + 220 + 20 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 4799995524 + 215422226496 = 69282^2 + 464136^2 .

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 = 220222221984 and 220222222002.

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 23 ways as a sum of consecutive naturals, for example, 362860 + ... + 756380.

It is an arithmetic number, because the mean of its divisors is an integer number (9280888435).

Almost surely, 2^220222222020 is an apocalyptic number.

220222222020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

220222222020 is an abundant number, since it is smaller than the sum of its proper divisors (448001745300).

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

220222222020 is a wasteful number, since it uses less digits than its factorization.

220222222020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 396645 (or 396640 counting only the distinct ones).

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

Adding to 220222222020 its reverse (20222222022), we get a palindrome (240444444042).

The spelling of 220222222020 in words is "two hundred twenty billion, two hundred twenty-two million, two hundred twenty-two thousand, twenty".