11999210669 has 2 divisors, whose sum is σ = 11999210670. Its totient is φ = 11999210668.

The previous prime is 11999210651. The next prime is 11999210689. The reversal of 11999210669 is 96601299911.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 11482194025 + 517016644 = 107155^2 + 22738^2 .

It is an emirp because it is prime and its reverse (96601299911) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 11999210669 - 2¹² = 11999206573 is a prime.

It is a super-2 number, since 2×11999210669² (a number of 21 digits) contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 11999210669.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11999210689) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5999605334 + 5999605335.

It is an arithmetic number, because the mean of its divisors is an integer number (5999605335).

Almost surely, 2^11999210669 is an apocalyptic number.

It is an amenable number.

11999210669 is a deficient number, since it is larger than the sum of its proper divisors (1).

11999210669 is an equidigital number, since it uses as much as digits as its factorization.

11999210669 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 472392, while the sum is 53.

The spelling of 11999210669 in words is "eleven billion, nine hundred ninety-nine million, two hundred ten thousand, six hundred sixty-nine".