1299011267 has 2 divisors, whose sum is σ = 1299011268. Its totient is φ = 1299011266.

The previous prime is 1299011179. The next prime is 1299011269. The reversal of 1299011267 is 7621109921.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1299011267 - 2¹⁶ = 1298945731 is a prime.

Together with 1299011269, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1299011267.

It is not a weakly prime, because it can be changed into another prime (1299011269) 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, 649505633 + 649505634.

It is an arithmetic number, because the mean of its divisors is an integer number (649505634).

Almost surely, 2^1299011267 is an apocalyptic number.

1299011267 is a deficient number, since it is larger than the sum of its proper divisors (1).

1299011267 is an equidigital number, since it uses as much as digits as its factorization.

1299011267 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 13608, while the sum is 38.

The square root of 1299011267 is about 36041.7988868480. The cubic root of 1299011267 is about 1091.1161215614.

The spelling of 1299011267 in words is "one billion, two hundred ninety-nine million, eleven thousand, two hundred sixty-seven".