112112111122221 has 16 divisors (see below), whose sum is σ = 180886767525504. Its totient is φ = 60295589174784.

The previous prime is 112112111122199. The next prime is 112112111122223. The reversal of 112112111122221 is 122221111211211.

It is not a de Polignac number, because 112112111122221 - 2⁷ = 112112111122093 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (112112111122223) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 157019763120 + ... + 157019763833.

It is an arithmetic number, because the mean of its divisors is an integer number (11305422970344).

Almost surely, 2^{112112111122221} is an apocalyptic number.

It is an amenable number.

112112111122221 is a deficient number, since it is larger than the sum of its proper divisors (68774656403283).

112112111122221 is a wasteful number, since it uses less digits than its factorization.

112112111122221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 314039526980.

The product of its digits is 64, while the sum is 21.

Adding to 112112111122221 its reverse (122221111211211), we get a palindrome (234333222333432).

The spelling of 112112111122221 in words is "one hundred twelve trillion, one hundred twelve billion, one hundred eleven million, one hundred twenty-two thousand, two hundred twenty-one".