1267000099 has 2 divisors, whose sum is σ = 1267000100. Its totient is φ = 1267000098.

The previous prime is 1267000087. The next prime is 1267000187. The reversal of 1267000099 is 9900007621.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1267000099 - 2¹⁹ = 1266475811 is a prime.

It is not a weakly prime, because it can be changed into another prime (1267000019) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 633500049 + 633500050.

It is an arithmetic number, because the mean of its divisors is an integer number (633500050).

Almost surely, 2^1267000099 is an apocalyptic number.

1267000099 is a deficient number, since it is larger than the sum of its proper divisors (1).

1267000099 is an equidigital number, since it uses as much as digits as its factorization.

1267000099 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6804, while the sum is 34.

The square root of 1267000099 is about 35594.9448517623. The cubic root of 1267000099 is about 1082.0787862470.

The spelling of 1267000099 in words is "one billion, two hundred sixty-seven million, ninety-nine", and thus it is an aban number.