1214262209 has 2 divisors, whose sum is σ = 1214262210. Its totient is φ = 1214262208.

The previous prime is 1214262173. The next prime is 1214262223. The reversal of 1214262209 is 9022624121.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1171555984 + 42706225 = 34228^2 + 6535^2 .

It is a cyclic number.

It is not a de Polignac number, because 1214262209 - 2²⁴ = 1197484993 is a prime.

It is not a weakly prime, because it can be changed into another prime (1214262229) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 607131104 + 607131105.

It is an arithmetic number, because the mean of its divisors is an integer number (607131105).

Almost surely, 2^1214262209 is an apocalyptic number.

It is an amenable number.

1214262209 is a deficient number, since it is larger than the sum of its proper divisors (1).

1214262209 is an equidigital number, since it uses as much as digits as its factorization.

1214262209 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3456, while the sum is 29.

The square root of 1214262209 is about 34846.2653522583. The cubic root of 1214262209 is about 1066.8519604643.

The spelling of 1214262209 in words is "one billion, two hundred fourteen million, two hundred sixty-two thousand, two hundred nine".