126322650217 has 2 divisors, whose sum is σ = 126322650218. Its totient is φ = 126322650216.

The previous prime is 126322650187. The next prime is 126322650257. The reversal of 126322650217 is 712056223621.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 115583680576 + 10738969641 = 339976^2 + 103629^2 .

It is a cyclic number.

It is not a de Polignac number, because 126322650217 - 2¹¹ = 126322648169 is a prime.

It is not a weakly prime, because it can be changed into another prime (126322650257) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 63161325108 + 63161325109.

It is an arithmetic number, because the mean of its divisors is an integer number (63161325109).

Almost surely, 2^126322650217 is an apocalyptic number.

It is an amenable number.

126322650217 is a deficient number, since it is larger than the sum of its proper divisors (1).

126322650217 is an equidigital number, since it uses as much as digits as its factorization.

126322650217 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 60480, while the sum is 37.

Adding to 126322650217 its reverse (712056223621), we get a palindrome (838378873838).

The spelling of 126322650217 in words is "one hundred twenty-six billion, three hundred twenty-two million, six hundred fifty thousand, two hundred seventeen".