312113312100121 has 4 divisors (see below), whose sum is σ = 356700928114432. Its totient is φ = 267525696085812.

The previous prime is 312113312100013. The next prime is 312113312100133. The reversal of 312113312100121 is 121001213311213.

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.

It is a cyclic number.

It is not a de Polignac number, because 312113312100121 - 2²⁷ = 312113177882393 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 312113312100092 and 312113312100101.

It is not an unprimeable number, because it can be changed into a prime (312113312100221) 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, 22293808007145 + ... + 22293808007158.

It is an arithmetic number, because the mean of its divisors is an integer number (89175232028608).

Almost surely, 2^{312113312100121} is an apocalyptic number.

It is an amenable number.

312113312100121 is a deficient number, since it is larger than the sum of its proper divisors (44587616014311).

312113312100121 is an equidigital number, since it uses as much as digits as its factorization.

312113312100121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44587616014310.

The product of its (nonzero) digits is 216, while the sum is 22.

Adding to 312113312100121 its reverse (121001213311213), we get a palindrome (433114525411334).

The spelling of 312113312100121 in words is "three hundred twelve trillion, one hundred thirteen billion, three hundred twelve million, one hundred thousand, one hundred twenty-one".