1222112222111 has 32 divisors (see below), whose sum is σ = 1355069846592. Its totient is φ = 1092960000000.

The previous prime is 1222112222083. The next prime is 1222112222113. The reversal of 1222112222111 is 1112222112221.

It is a de Polignac number, because none of the positive numbers 2^k-1222112222111 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1222112222113) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 123428261 + ... + 123438161.

It is an arithmetic number, because the mean of its divisors is an integer number (42345932706).

Almost surely, 2^{1222112222111} is an apocalyptic number.

1222112222111 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

1222112222111 is a deficient number, since it is larger than the sum of its proper divisors (132957624481).

1222112222111 is a wasteful number, since it uses less digits than its factorization.

1222112222111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10715.

The product of its digits is 128, while the sum is 20.

Adding to 1222112222111 its reverse (1112222112221), we get a palindrome (2334334334332).

The spelling of 1222112222111 in words is "one trillion, two hundred twenty-two billion, one hundred twelve million, two hundred twenty-two thousand, one hundred eleven".