222212100220 has 24 divisors (see below), whose sum is σ = 509067721008. Its totient is φ = 80804400000.

The previous prime is 222212100113. The next prime is 222212100239. The reversal of 222212100220 is 22001212222.

It is a junction number, because it is equal to n+sod(n) for n = 222212100194 and 222212100203.

It is a congruent number.

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 7 ways as a sum of consecutive naturals, for example, 505027281 + ... + 505027720.

It is an arithmetic number, because the mean of its divisors is an integer number (21211155042).

Almost surely, 2^222212100220 is an apocalyptic number.

222212100220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

222212100220 is an abundant number, since it is smaller than the sum of its proper divisors (286855620788).

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

222212100220 is a wasteful number, since it uses less digits than its factorization.

222212100220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1010055021 (or 1010055019 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 16.

Adding to 222212100220 its reverse (22001212222), we get a palindrome (244213312442).

The spelling of 222212100220 in words is "two hundred twenty-two billion, two hundred twelve million, one hundred thousand, two hundred twenty".