11221212112222 has 64 divisors (see below), whose sum is σ = 19705534132608. Its totient is φ = 4693248000000.

The previous prime is 11221212112193. The next prime is 11221212112261. The reversal of 11221212112222 is 22221121212211.

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 = 11221212112193 and 11221212112202.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 165224472 + ... + 165292372.

It is an arithmetic number, because the mean of its divisors is an integer number (307898970822).

Almost surely, 2^{11221212112222} is an apocalyptic number.

11221212112222 is a deficient number, since it is larger than the sum of its proper divisors (8484322020386).

11221212112222 is a wasteful number, since it uses less digits than its factorization.

11221212112222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 69685.

The product of its digits is 256, while the sum is 22.

Adding to 11221212112222 its reverse (22221121212211), we get a palindrome (33442333324433).

The spelling of 11221212112222 in words is "eleven trillion, two hundred twenty-one billion, two hundred twelve million, one hundred twelve thousand, two hundred twenty-two".