222220212220 has 12 divisors (see below), whose sum is σ = 466662445704. Its totient is φ = 88888084880.

The previous prime is 222220212209. The next prime is 222220212283. The reversal of 222220212220 is 22212022222.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5555505286 + ... + 5555505325.

It is an arithmetic number, because the mean of its divisors is an integer number (38888537142).

Almost surely, 2^222220212220 is an apocalyptic number.

222220212220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

222220212220 is an abundant number, since it is smaller than the sum of its proper divisors (244442233484).

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

222220212220 is a wasteful number, since it uses less digits than its factorization.

222220212220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11111010620 (or 11111010618 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 19.

Adding to 222220212220 its reverse (22212022222), we get a palindrome (244432234442).

The spelling of 222220212220 in words is "two hundred twenty-two billion, two hundred twenty million, two hundred twelve thousand, two hundred twenty".