1217001101 has 2 divisors, whose sum is σ = 1217001102. Its totient is φ = 1217001100.

The previous prime is 1217000971. The next prime is 1217001133. The reversal of 1217001101 is 1011007121.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 855621001 + 361380100 = 29251^2 + 19010^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1217001101 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1217001161) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 608500550 + 608500551.

It is an arithmetic number, because the mean of its divisors is an integer number (608500551).

Almost surely, 2^1217001101 is an apocalyptic number.

It is an amenable number.

1217001101 is a deficient number, since it is larger than the sum of its proper divisors (1).

1217001101 is an equidigital number, since it uses as much as digits as its factorization.

1217001101 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 14, while the sum is 14.

The square root of 1217001101 is about 34885.5428652042. The cubic root of 1217001101 is about 1067.6534891832.

Adding to 1217001101 its reverse (1011007121), we get a palindrome (2228008222).

The spelling of 1217001101 in words is "one billion, two hundred seventeen million, one thousand, one hundred one".