312201233210021 has 8 divisors (see below), whose sum is σ = 330043318600320. Its totient is φ = 294500191973472.

The previous prime is 312201233209939. The next prime is 312201233210033. The reversal of 312201233210021 is 120012332102213.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-312201233210021 is a prime.

It is a super-2 number, since 2×312201233210021² (a number of 30 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (312201233210621) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 35261033885 + ... + 35261042738.

It is an arithmetic number, because the mean of its divisors is an integer number (41255414825040).

Almost surely, 2^{312201233210021} is an apocalyptic number.

It is an amenable number.

312201233210021 is a deficient number, since it is larger than the sum of its proper divisors (17842085390299).

312201233210021 is a wasteful number, since it uses less digits than its factorization.

312201233210021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 70522076875.

The product of its (nonzero) digits is 864, while the sum is 23.

Adding to 312201233210021 its reverse (120012332102213), we get a palindrome (432213565312234).

The spelling of 312201233210021 in words is "three hundred twelve trillion, two hundred one billion, two hundred thirty-three million, two hundred ten thousand, twenty-one".