312221303322101 has 4 divisors (see below), whose sum is σ = 315729407853900. Its totient is φ = 308713198790304.

The previous prime is 312221303322037. The next prime is 312221303322113. The reversal of 312221303322101 is 101223303122213.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 198531650695876 + 113689652626225 = 14090126^2 + 10662535^2 .

It is a cyclic number.

It is not a de Polignac number, because 312221303322101 - 2⁶ = 312221303322037 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (312221303322121) 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, 1754052265766 + ... + 1754052265943.

It is an arithmetic number, because the mean of its divisors is an integer number (78932351963475).

Almost surely, 2^{312221303322101} is an apocalyptic number.

It is an amenable number.

312221303322101 is a deficient number, since it is larger than the sum of its proper divisors (3508104531799).

312221303322101 is an equidigital number, since it uses as much as digits as its factorization.

312221303322101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3508104531798.

The product of its (nonzero) digits is 2592, while the sum is 26.

Adding to 312221303322101 its reverse (101223303122213), we get a palindrome (413444606444314).

The spelling of 312221303322101 in words is "three hundred twelve trillion, two hundred twenty-one billion, three hundred three million, three hundred twenty-two thousand, one hundred one".