1152211616209 has 2 divisors, whose sum is σ = 1152211616210. Its totient is φ = 1152211616208.

The previous prime is 1152211616207. The next prime is 1152211616261. The reversal of 1152211616209 is 9026161122511.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 622623574225 + 529588041984 = 789065^2 + 727728^2 .

It is a cyclic number.

It is not a de Polignac number, because 1152211616209 - 2¹ = 1152211616207 is a prime.

Together with 1152211616207, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (1152211616203) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 576105808104 + 576105808105.

It is an arithmetic number, because the mean of its divisors is an integer number (576105808105).

Almost surely, 2^{1152211616209} is an apocalyptic number.

It is an amenable number.

1152211616209 is a deficient number, since it is larger than the sum of its proper divisors (1).

1152211616209 is an equidigital number, since it uses as much as digits as its factorization.

1152211616209 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 12960, while the sum is 37.

The spelling of 1152211616209 in words is "one trillion, one hundred fifty-two billion, two hundred eleven million, six hundred sixteen thousand, two hundred nine".