12312112101 has 4 divisors (see below), whose sum is σ = 16416149472. Its totient is φ = 8208074732.

The previous prime is 12312112093. The next prime is 12312112103. The reversal of 12312112101 is 10121121321.

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: 10121121321 = 3 ⋅3373707107.

It is a cyclic number.

It is not a de Polignac number, because 12312112101 - 2³ = 12312112093 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12312112103) 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, 2052018681 + ... + 2052018686.

It is an arithmetic number, because the mean of its divisors is an integer number (4104037368).

Almost surely, 2^12312112101 is an apocalyptic number.

It is an amenable number.

12312112101 is a deficient number, since it is larger than the sum of its proper divisors (4104037371).

12312112101 is an equidigital number, since it uses as much as digits as its factorization.

12312112101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4104037370.

The product of its (nonzero) digits is 24, while the sum is 15.

Adding to 12312112101 its reverse (10121121321), we get a palindrome (22433233422).

The spelling of 12312112101 in words is "twelve billion, three hundred twelve million, one hundred twelve thousand, one hundred one".