1232012209 has 2 divisors, whose sum is σ = 1232012210. Its totient is φ = 1232012208.

The previous prime is 1232012203. The next prime is 1232012213. The reversal of 1232012209 is 9022102321.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1232010000 + 2209 = 35100^2 + 47^2 .

It is a cyclic number.

It is not a de Polignac number, because 1232012209 - 2¹⁷ = 1231881137 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1232012209.

It is not a weakly prime, because it can be changed into another prime (1232012203) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 616006104 + 616006105.

It is an arithmetic number, because the mean of its divisors is an integer number (616006105).

Almost surely, 2^1232012209 is an apocalyptic number.

It is an amenable number.

1232012209 is a deficient number, since it is larger than the sum of its proper divisors (1).

1232012209 is an equidigital number, since it uses as much as digits as its factorization.

1232012209 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 22.

The square root of 1232012209 is about 35100.0314672224. The cubic root of 1232012209 is about 1072.0252233915.

It can be divided in two parts, 123201 and 2209, that multiplied together give a square (272151009 = 16497²).

The spelling of 1232012209 in words is "one billion, two hundred thirty-two million, twelve thousand, two hundred nine".