112112112001221 has 24 divisors (see below), whose sum is σ = 168981253786176. Its totient is φ = 71491494222720.

The previous prime is 112112112001199. The next prime is 112112112001319. The reversal of 112112112001221 is 122100211211211.

It is a happy number.

112112112001221 is a `hidden beast` number, since 1 + 1 + 211 + 211 + 20 + 0 + 1 + 221 = 666.

It is not a de Polignac number, because 112112112001221 - 2¹⁰ = 112112112000197 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 112112112001194 and 112112112001203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (112112112001321) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 58363026 + ... + 60253356.

It is an arithmetic number, because the mean of its divisors is an integer number (7040885574424).

Almost surely, 2^{112112112001221} is an apocalyptic number.

It is an amenable number.

112112112001221 is a deficient number, since it is larger than the sum of its proper divisors (56869141784955).

112112112001221 is a wasteful number, since it uses less digits than its factorization.

112112112001221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2176873 (or 2176870 counting only the distinct ones).

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

Adding to 112112112001221 its reverse (122100211211211), we get a palindrome (234212323212432).

The spelling of 112112112001221 in words is "one hundred twelve trillion, one hundred twelve billion, one hundred twelve million, one thousand, two hundred twenty-one".