112101212122221 has 12 divisors (see below), whose sum is σ = 173871267781632. Its totient is φ = 64057835498328.

The previous prime is 112101212122199. The next prime is 112101212122247. The reversal of 112101212122221 is 122221212101211.

It is not a de Polignac number, because 112101212122221 - 2¹⁴ = 112101212105837 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 (112101212122321) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 381296639725 + ... + 381296640018.

It is an arithmetic number, because the mean of its divisors is an integer number (14489272315136).

Almost surely, 2^{112101212122221} is an apocalyptic number.

It is an amenable number.

112101212122221 is a deficient number, since it is larger than the sum of its proper divisors (61770055659411).

112101212122221 is an equidigital number, since it uses as much as digits as its factorization.

112101212122221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 762593279760 (or 762593279753 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 21.

Adding to 112101212122221 its reverse (122221212101211), we get a palindrome (234322424223432).

The spelling of 112101212122221 in words is "one hundred twelve trillion, one hundred one billion, two hundred twelve million, one hundred twenty-two thousand, two hundred twenty-one".