222222211121222 has 64 divisors (see below), whose sum is σ = 364425549102720. Its totient is φ = 101009801088000.

The previous prime is 222222211121179. The next prime is 222222211121231. The reversal of 222222211121222 is 222121112222222.

It is a super-2 number, since 2×222222211121222² (a number of 29 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (26).

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 = 222222211121191 and 222222211121200.

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 31 ways as a sum of consecutive naturals, for example, 7879926722 + ... + 7879954922.

It is an arithmetic number, because the mean of its divisors is an integer number (5694149204730).

Almost surely, 2^{222222211121222} is an apocalyptic number.

222222211121222 is a deficient number, since it is larger than the sum of its proper divisors (142203337981498).

222222211121222 is a wasteful number, since it uses less digits than its factorization.

222222211121222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32769.

The product of its digits is 2048, while the sum is 26.

Adding to 222222211121222 its reverse (222121112222222), we get a palindrome (444343323343444).

The spelling of 222222211121222 in words is "two hundred twenty-two trillion, two hundred twenty-two billion, two hundred eleven million, one hundred twenty-one thousand, two hundred twenty-two".