12012333209 has 2 divisors, whose sum is σ = 12012333210. Its totient is φ = 12012333208.

The previous prime is 12012333191. The next prime is 12012333329. The reversal of 12012333209 is 90233321021.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 11863566400 + 148766809 = 108920^2 + 12197^2 .

It is a cyclic number.

It is not a de Polignac number, because 12012333209 - 2⁸ = 12012332953 is a prime.

It is a super-2 number, since 2×12012333209² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (12012333409) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6006166604 + 6006166605.

It is an arithmetic number, because the mean of its divisors is an integer number (6006166605).

Almost surely, 2^12012333209 is an apocalyptic number.

It is an amenable number.

12012333209 is a deficient number, since it is larger than the sum of its proper divisors (1).

12012333209 is an equidigital number, since it uses as much as digits as its factorization.

12012333209 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1944, while the sum is 26.

The spelling of 12012333209 in words is "twelve billion, twelve million, three hundred thirty-three thousand, two hundred nine".