222221211122 has 4 divisors (see below), whose sum is σ = 333331816686. Its totient is φ = 111110605560.

The previous prime is 222221211059. The next prime is 222221211283. The reversal of 222221211122 is 221112122222.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 206978592601 + 15242618521 = 454949^2 + 123461^2 .

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 = 222221211094 and 222221211103.

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 as a sum of consecutive naturals, namely, 55555302779 + ... + 55555302782.

Almost surely, 2^222221211122 is an apocalyptic number.

222221211122 is a deficient number, since it is larger than the sum of its proper divisors (111110605564).

222221211122 is a wasteful number, since it uses less digits than its factorization.

222221211122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 111110605563.

The product of its digits is 256, while the sum is 20.

Adding to 222221211122 its reverse (221112122222), we get a palindrome (443333333344).

The spelling of 222221211122 in words is "two hundred twenty-two billion, two hundred twenty-one million, two hundred eleven thousand, one hundred twenty-two".