222222020 has 12 divisors (see below), whose sum is σ = 466666284. Its totient is φ = 88888800.

The previous prime is 222221971. The next prime is 222222029. The reversal of 222222020 is 20222222.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 169572484 + 52649536 = 13022^2 + 7256^2 .

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 = 222221986 and 222222004.

It is not an unprimeable number, because it can be changed into a prime (222222029) 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, 5555531 + ... + 5555570.

It is an arithmetic number, because the mean of its divisors is an integer number (38888857).

Almost surely, 2^222222020 is an apocalyptic number.

222222020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

222222020 is an abundant number, since it is smaller than the sum of its proper divisors (244444264).

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

222222020 is a wasteful number, since it uses less digits than its factorization.

222222020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11111110 (or 11111108 counting only the distinct ones).

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

The square root of 222222020 is about 14907.1130672575. The cubic root of 222222020 is about 605.7066805462.

Adding to 222222020 its reverse (20222222), we get a palindrome (242444242).

It can be divided in two parts, 22222 and 2020, that added together give a palindrome (24242).

The spelling of 222222020 in words is "two hundred twenty-two million, two hundred twenty-two thousand, twenty".