112111221210121 has 24 divisors (see below), whose sum is σ = 130634873408520. Its totient is φ = 95933460672000.

The previous prime is 112111221210067. The next prime is 112111221210143. The reversal of 112111221210121 is 121012122111211.

It can be written as a sum of positive squares in 4 ways, for example, as 55743619807225 + 56367601402896 = 7466165^2 + 7507836^2 .

It is not a de Polignac number, because 112111221210121 - 2¹⁵ = 112111221177353 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (112111221216121) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 133163631 + ... + 134002891.

It is an arithmetic number, because the mean of its divisors is an integer number (5443119725355).

Almost surely, 2^{112111221210121} is an apocalyptic number.

It is an amenable number.

112111221210121 is a deficient number, since it is larger than the sum of its proper divisors (18523652198399).

112111221210121 is an equidigital number, since it uses as much as digits as its factorization.

112111221210121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 843865 (or 843858 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 19.

Adding to 112111221210121 its reverse (121012122111211), we get a palindrome (233123343321332).

The spelling of 112111221210121 in words is "one hundred twelve trillion, one hundred eleven billion, two hundred twenty-one million, two hundred ten thousand, one hundred twenty-one".