1222112112111 has 48 divisors (see below), whose sum is σ = 1944883150080. Its totient is φ = 733319256960.

The previous prime is 1222112112103. The next prime is 1222112112119. The reversal of 1222112112111 is 1112112112221.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (1222112112103) and next prime (1222112112119).

It is not a de Polignac number, because 1222112112111 - 2³ = 1222112112103 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1222112112119) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 58000200 + ... + 58021266.

It is an arithmetic number, because the mean of its divisors is an integer number (40518398960).

Almost surely, 2^{1222112112111} is an apocalyptic number.

1222112112111 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

1222112112111 is a deficient number, since it is larger than the sum of its proper divisors (722771037969).

1222112112111 is a wasteful number, since it uses less digits than its factorization.

1222112112111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26876 (or 26873 counting only the distinct ones).

The product of its digits is 32, while the sum is 18.

Adding to 1222112112111 its reverse (1112112112221), we get a palindrome (2334224224332).

It can be divided in two parts, 122211 and 2112111, that added together give a palindrome (2234322).

The spelling of 1222112112111 in words is "one trillion, two hundred twenty-two billion, one hundred twelve million, one hundred twelve thousand, one hundred eleven".