212132121317 has 2 divisors, whose sum is σ = 212132121318. Its totient is φ = 212132121316.

The previous prime is 212132121301. The next prime is 212132121469. The reversal of 212132121317 is 713121231212.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 155792826436 + 56339294881 = 394706^2 + 237359^2 .

It is a cyclic number.

It is not a de Polignac number, because 212132121317 - 2⁴ = 212132121301 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (212132121517) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106066060658 + 106066060659.

It is an arithmetic number, because the mean of its divisors is an integer number (106066060659).

Almost surely, 2^212132121317 is an apocalyptic number.

It is an amenable number.

212132121317 is a deficient number, since it is larger than the sum of its proper divisors (1).

212132121317 is an equidigital number, since it uses as much as digits as its factorization.

212132121317 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1008, while the sum is 26.

Adding to 212132121317 its reverse (713121231212), we get a palindrome (925253352529).

The spelling of 212132121317 in words is "two hundred twelve billion, one hundred thirty-two million, one hundred twenty-one thousand, three hundred seventeen".