12021112313 has 4 divisors (see below), whose sum is σ = 13738414080. Its totient is φ = 10303810548.

The previous prime is 12021112307. The next prime is 12021112319. The reversal of 12021112313 is 31321112021.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 31321112021 = 1129 ⋅27742349.

It is an interprime number because it is at equal distance from previous prime (12021112307) and next prime (12021112319).

It is a cyclic number.

It is not a de Polignac number, because 12021112313 - 2¹⁸ = 12020850169 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 = 12021112291 and 12021112300.

It is not an unprimeable number, because it can be changed into a prime (12021112319) 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 3 ways as a sum of consecutive naturals, for example, 858650873 + ... + 858650886.

It is an arithmetic number, because the mean of its divisors is an integer number (3434603520).

Almost surely, 2^12021112313 is an apocalyptic number.

It is an amenable number.

12021112313 is a deficient number, since it is larger than the sum of its proper divisors (1717301767).

12021112313 is an equidigital number, since it uses as much as digits as its factorization.

12021112313 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1717301766.

The product of its (nonzero) digits is 72, while the sum is 17.

Adding to 12021112313 its reverse (31321112021), we get a palindrome (43342224334).

The spelling of 12021112313 in words is "twelve billion, twenty-one million, one hundred twelve thousand, three hundred thirteen".