312041334240221 has 2 divisors, whose sum is σ = 312041334240222. Its totient is φ = 312041334240220.

The previous prime is 312041334240211. The next prime is 312041334240241. The reversal of 312041334240221 is 122042433140213.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 311538385202500 + 502949037721 = 17650450^2 + 709189^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-312041334240221 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (312041334240211) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 156020667120110 + 156020667120111.

It is an arithmetic number, because the mean of its divisors is an integer number (156020667120111).

Almost surely, 2^{312041334240221} is an apocalyptic number.

It is an amenable number.

312041334240221 is a deficient number, since it is larger than the sum of its proper divisors (1).

312041334240221 is an equidigital number, since it uses as much as digits as its factorization.

312041334240221 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 27648, while the sum is 32.

Adding to 312041334240221 its reverse (122042433140213), we get a palindrome (434083767380434).

The spelling of 312041334240221 in words is "three hundred twelve trillion, forty-one billion, three hundred thirty-four million, two hundred forty thousand, two hundred twenty-one".