212132344232257 has 2 divisors, whose sum is σ = 212132344232258. Its totient is φ = 212132344232256.

The previous prime is 212132344232243. The next prime is 212132344232339. The reversal of 212132344232257 is 752232443231212.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 211373913999616 + 758430232641 = 14538704^2 + 870879^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-212132344232257 is a prime.

It is not a weakly prime, because it can be changed into another prime (212132344232357) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106066172116128 + 106066172116129.

It is an arithmetic number, because the mean of its divisors is an integer number (106066172116129).

Almost surely, 2^{212132344232257} is an apocalyptic number.

It is an amenable number.

212132344232257 is a deficient number, since it is larger than the sum of its proper divisors (1).

212132344232257 is an equidigital number, since it uses as much as digits as its factorization.

212132344232257 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 967680, while the sum is 43.

Adding to 212132344232257 its reverse (752232443231212), we get a palindrome (964364787463469).

The spelling of 212132344232257 in words is "two hundred twelve trillion, one hundred thirty-two billion, three hundred forty-four million, two hundred thirty-two thousand, two hundred fifty-seven".