112121221213 has 8 divisors (see below), whose sum is σ = 113159775960. Its totient is φ = 111082847040.

The previous prime is 112121221207. The next prime is 112121221217. The reversal of 112121221213 is 312122121211.

It can be written as a sum of positive squares in 4 ways, for example, as 22338889444 + 89782331769 = 149462^2 + 299637^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 112121221213 - 2¹³ = 112121213021 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (112121221217) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1421883 + ... + 1498663.

It is an arithmetic number, because the mean of its divisors is an integer number (14144971995).

Almost surely, 2^112121221213 is an apocalyptic number.

It is an amenable number.

112121221213 is a deficient number, since it is larger than the sum of its proper divisors (1038554747).

112121221213 is a wasteful number, since it uses less digits than its factorization.

112121221213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 90287.

The product of its digits is 96, while the sum is 19.

Adding to 112121221213 its reverse (312122121211), we get a palindrome (424243342424).

The spelling of 112121221213 in words is "one hundred twelve billion, one hundred twenty-one million, two hundred twenty-one thousand, two hundred thirteen".