112112221112221 has 32 divisors (see below), whose sum is σ = 132257068075008. Its totient is φ = 93881689424640.

The previous prime is 112112221112179. The next prime is 112112221112233. The reversal of 112112221112221 is 122211122211211.

It is a cyclic number.

It is not a de Polignac number, because 112112221112221 - 2¹⁷ = 112112220981149 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 112112221112192 and 112112221112201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (112112221116221) 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, 437942166 + ... + 438198088.

It is an arithmetic number, because the mean of its divisors is an integer number (4133033377344).

Almost surely, 2^{112112221112221} is an apocalyptic number.

112112221112221 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

112112221112221 is a deficient number, since it is larger than the sum of its proper divisors (20144846962787).

112112221112221 is a wasteful number, since it uses less digits than its factorization.

112112221112221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 305841.

The product of its digits is 128, while the sum is 22.

Adding to 112112221112221 its reverse (122211122211211), we get a palindrome (234323343323432).

The spelling of 112112221112221 in words is "one hundred twelve trillion, one hundred twelve billion, two hundred twenty-one million, one hundred twelve thousand, two hundred twenty-one".