1217252633 has 2 divisors, whose sum is σ = 1217252634. Its totient is φ = 1217252632.

The previous prime is 1217252629. The next prime is 1217252719. The reversal of 1217252633 is 3362527121.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1217172544 + 80089 = 34888^2 + 283^2 .

It is a cyclic number.

It is not a de Polignac number, because 1217252633 - 2² = 1217252629 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 1217252633.

It is not a weakly prime, because it can be changed into another prime (1217252033) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 608626316 + 608626317.

It is an arithmetic number, because the mean of its divisors is an integer number (608626317).

Almost surely, 2^1217252633 is an apocalyptic number.

It is an amenable number.

1217252633 is a deficient number, since it is larger than the sum of its proper divisors (1).

1217252633 is an equidigital number, since it uses as much as digits as its factorization.

1217252633 is an evil number, because the sum of its binary digits is even.

The product of its digits is 15120, while the sum is 32.

The square root of 1217252633 is about 34889.1477826559. The cubic root of 1217252633 is about 1067.7270389709.

Adding to 1217252633 its reverse (3362527121), we get a palindrome (4579779754).

The spelling of 1217252633 in words is "one billion, two hundred seventeen million, two hundred fifty-two thousand, six hundred thirty-three".