1215116267 has 2 divisors, whose sum is σ = 1215116268. Its totient is φ = 1215116266.

The previous prime is 1215116257. The next prime is 1215116281. The reversal of 1215116267 is 7626115121.

It is a weak prime.

It is an emirp because it is prime and its reverse (7626115121) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1215116267 - 2²⁰ = 1214067691 is a prime.

It is not a weakly prime, because it can be changed into another prime (1215116257) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 607558133 + 607558134.

It is an arithmetic number, because the mean of its divisors is an integer number (607558134).

Almost surely, 2^1215116267 is an apocalyptic number.

1215116267 is a deficient number, since it is larger than the sum of its proper divisors (1).

1215116267 is an equidigital number, since it uses as much as digits as its factorization.

1215116267 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 5040, while the sum is 32.

The square root of 1215116267 is about 34858.5178543208. The cubic root of 1215116267 is about 1067.1020272419.

The spelling of 1215116267 in words is "one billion, two hundred fifteen million, one hundred sixteen thousand, two hundred sixty-seven".