1254522231217 has 2 divisors, whose sum is σ = 1254522231218. Its totient is φ = 1254522231216.

The previous prime is 1254522231073. The next prime is 1254522231229. The reversal of 1254522231217 is 7121322254521.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 935793108496 + 318729122721 = 967364^2 + 564561^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1254522231217 is a prime.

It is not a weakly prime, because it can be changed into another prime (1254522231257) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 627261115608 + 627261115609.

It is an arithmetic number, because the mean of its divisors is an integer number (627261115609).

Almost surely, 2^{1254522231217} is an apocalyptic number.

It is an amenable number.

1254522231217 is a deficient number, since it is larger than the sum of its proper divisors (1).

1254522231217 is an equidigital number, since it uses as much as digits as its factorization.

1254522231217 is an evil number, because the sum of its binary digits is even.

The product of its digits is 67200, while the sum is 37.

Adding to 1254522231217 its reverse (7121322254521), we get a palindrome (8375844485738).

The spelling of 1254522231217 in words is "one trillion, two hundred fifty-four billion, five hundred twenty-two million, two hundred thirty-one thousand, two hundred seventeen".