2221112122222 has 16 divisors (see below), whose sum is σ = 3807870386400. Its totient is φ = 951842793888.

The previous prime is 2221112122213. The next prime is 2221112122241. The reversal of 2221112122222 is 2222212111222.

It is a nude number because it is divisible by every one of its digits.

It is a junction number, because it is equal to n+sod(n) for n = 2221112122193 and 2221112122202.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4978597 + ... + 5406352.

It is an arithmetic number, because the mean of its divisors is an integer number (237991899150).

Almost surely, 2^{2221112122222} is an apocalyptic number.

2221112122222 is a deficient number, since it is larger than the sum of its proper divisors (1586758264178).

2221112122222 is a wasteful number, since it uses less digits than its factorization.

2221112122222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10400235.

The product of its digits is 512, while the sum is 22.

Adding to 2221112122222 its reverse (2222212111222), we get a palindrome (4443324233444).

The spelling of 2221112122222 in words is "two trillion, two hundred twenty-one billion, one hundred twelve million, one hundred twenty-two thousand, two hundred twenty-two".