1222111112212 has 12 divisors (see below), whose sum is σ = 2138753677536. Its totient is φ = 611038632920.

The previous prime is 1222111112197. The next prime is 1222111112267. The reversal of 1222111112212 is 2122111112221.

It is a happy number.

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

It is a self number, because there is not a number n which added to its sum of digits gives 1222111112212.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4067614 + ... + 4357717.

It is an arithmetic number, because the mean of its divisors is an integer number (178229473128).

Almost surely, 2^{1222111112212} is an apocalyptic number.

It is an amenable number.

1222111112212 is a deficient number, since it is larger than the sum of its proper divisors (916642565324).

1222111112212 is a wasteful number, since it uses less digits than its factorization.

1222111112212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8461598 (or 8461596 counting only the distinct ones).

The product of its digits is 64, while the sum is 19.

Adding to 1222111112212 its reverse (2122111112221), we get a palindrome (3344222224433).

Subtracting 1222111112212 from its reverse (2122111112221), we obtain a palindrome (900000000009).

The spelling of 1222111112212 in words is "one trillion, two hundred twenty-two billion, one hundred eleven million, one hundred twelve thousand, two hundred twelve".