312201132212321 has 16 divisors (see below), whose sum is σ = 341227963638720. Its totient is φ = 283282246590720.

The previous prime is 312201132212293. The next prime is 312201132212413. The reversal of 312201132212321 is 123212231102213.

It is a cyclic number.

It is not a de Polignac number, because 312201132212321 - 2⁶ = 312201132212257 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (312201132217321) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2035541 + ... + 25070813.

It is an arithmetic number, because the mean of its divisors is an integer number (21326747727420).

Almost surely, 2^{312201132212321} is an apocalyptic number.

It is an amenable number.

312201132212321 is a deficient number, since it is larger than the sum of its proper divisors (29026831426399).

312201132212321 is a wasteful number, since it uses less digits than its factorization.

312201132212321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23037616.

The product of its (nonzero) digits is 1728, while the sum is 26.

Adding to 312201132212321 its reverse (123212231102213), we get a palindrome (435413363314534).

The spelling of 312201132212321 in words is "three hundred twelve trillion, two hundred one billion, one hundred thirty-two million, two hundred twelve thousand, three hundred twenty-one".