112012121213 has 4 divisors (see below), whose sum is σ = 112016374428. Its totient is φ = 112007868000.

The previous prime is 112012121201. The next prime is 112012121251. The reversal of 112012121213 is 312121210211.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 38650773604 + 73361347609 = 196598^2 + 270853^2 .

It is a cyclic number.

It is not a de Polignac number, because 112012121213 - 2²⁰ = 112011072637 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 112012121191 and 112012121200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (112012121113) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2086856 + ... + 2139857.

It is an arithmetic number, because the mean of its divisors is an integer number (28004093607).

Almost surely, 2^112012121213 is an apocalyptic number.

It is an amenable number.

112012121213 is a deficient number, since it is larger than the sum of its proper divisors (4253215).

112012121213 is an equidigital number, since it uses as much as digits as its factorization.

112012121213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4253214.

The product of its (nonzero) digits is 48, while the sum is 17.

Adding to 112012121213 its reverse (312121210211), we get a palindrome (424133331424).

The spelling of 112012121213 in words is "one hundred twelve billion, twelve million, one hundred twenty-one thousand, two hundred thirteen".