112312121221 has 8 divisors (see below), whose sum is σ = 113911880544. Its totient is φ = 110718233520.

The previous prime is 112312121147. The next prime is 112312121291. The reversal of 112312121221 is 122121213211.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-112312121221 is a prime.

It is a super-2 number, since 2×112312121221² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (112312121291) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1429371 + ... + 1505896.

It is an arithmetic number, because the mean of its divisors is an integer number (14238985068).

Almost surely, 2^112312121221 is an apocalyptic number.

It is an amenable number.

112312121221 is a deficient number, since it is larger than the sum of its proper divisors (1599759323).

112312121221 is an equidigital number, since it uses as much as digits as its factorization.

112312121221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2935811.

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

Adding to 112312121221 its reverse (122121213211), we get a palindrome (234433334432).

The spelling of 112312121221 in words is "one hundred twelve billion, three hundred twelve million, one hundred twenty-one thousand, two hundred twenty-one".