1260012209 has 2 divisors, whose sum is σ = 1260012210. Its totient is φ = 1260012208.

The previous prime is 1260012181. The next prime is 1260012371. The reversal of 1260012209 is 9022100621.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1137577984 + 122434225 = 33728^2 + 11065^2 .

It is an emirp because it is prime and its reverse (9022100621) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1260012209 - 2⁸ = 1260011953 is a prime.

It is not a weakly prime, because it can be changed into another prime (1260012709) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 630006104 + 630006105.

It is an arithmetic number, because the mean of its divisors is an integer number (630006105).

Almost surely, 2^1260012209 is an apocalyptic number.

It is an amenable number.

1260012209 is a deficient number, since it is larger than the sum of its proper divisors (1).

1260012209 is an equidigital number, since it uses as much as digits as its factorization.

1260012209 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 432, while the sum is 23.

The square root of 1260012209 is about 35496.6506729860. The cubic root of 1260012209 is about 1080.0857867956.

The spelling of 1260012209 in words is "one billion, two hundred sixty million, twelve thousand, two hundred nine".