12011012213209 has 2 divisors, whose sum is σ = 12011012213210. Its totient is φ = 12011012213208.

The previous prime is 12011012213147. The next prime is 12011012213251. The reversal of 12011012213209 is 90231221011021.

12011012213209 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 11080723027984 + 930289185225 = 3328772^2 + 964515^2 .

It is a cyclic number.

It is not a de Polignac number, because 12011012213209 - 2²¹ = 12011010116057 is a prime.

It is not a weakly prime, because it can be changed into another prime (12011012217209) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6005506106604 + 6005506106605.

It is an arithmetic number, because the mean of its divisors is an integer number (6005506106605).

Almost surely, 2^{12011012213209} is an apocalyptic number.

It is an amenable number.

12011012213209 is a deficient number, since it is larger than the sum of its proper divisors (1).

12011012213209 is an equidigital number, since it uses as much as digits as its factorization.

12011012213209 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 432, while the sum is 25.

The spelling of 12011012213209 in words is "twelve trillion, eleven billion, twelve million, two hundred thirteen thousand, two hundred nine".