312101032121 has 4 divisors (see below), whose sum is σ = 313580184144. Its totient is φ = 310621880100.

The previous prime is 312101032079. The next prime is 312101032123. The reversal of 312101032121 is 121230101213.

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 312101032121 - 2¹⁰ = 312101031097 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 312101032121.

It is not an unprimeable number, because it can be changed into a prime (312101032123) 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, 739575695 + ... + 739576116.

It is an arithmetic number, because the mean of its divisors is an integer number (78395046036).

Almost surely, 2^312101032121 is an apocalyptic number.

It is an amenable number.

312101032121 is a deficient number, since it is larger than the sum of its proper divisors (1479152023).

312101032121 is a wasteful number, since it uses less digits than its factorization.

312101032121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1479152022.

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

Adding to 312101032121 its reverse (121230101213), we get a palindrome (433331133334).

The spelling of 312101032121 in words is "three hundred twelve billion, one hundred one million, thirty-two thousand, one hundred twenty-one".