312212013201211 has 4 divisors (see below), whose sum is σ = 312237877848624. Its totient is φ = 312186148553800.

The previous prime is 312212013201203. The next prime is 312212013201313. The reversal of 312212013201211 is 112102310212213.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 312212013201211 - 2³ = 312212013201203 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (312212013201511) 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, 12932305600 + ... + 12932329741.

It is an arithmetic number, because the mean of its divisors is an integer number (78059469462156).

Almost surely, 2^{312212013201211} is an apocalyptic number.

312212013201211 is a deficient number, since it is larger than the sum of its proper divisors (25864647413).

312212013201211 is a wasteful number, since it uses less digits than its factorization.

312212013201211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25864647412.

The product of its (nonzero) digits is 288, while the sum is 22.

Adding to 312212013201211 its reverse (112102310212213), we get a palindrome (424314323413424).

The spelling of 312212013201211 in words is "three hundred twelve trillion, two hundred twelve billion, thirteen million, two hundred one thousand, two hundred eleven".