11000000211209 has 2 divisors, whose sum is σ = 11000000211210. Its totient is φ = 11000000211208.

The previous prime is 11000000211163. The next prime is 11000000211223. The reversal of 11000000211209 is 90211200000011.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 7114382598400 + 3885617612809 = 2667280^2 + 1971197^2 .

It is a cyclic number.

It is not a de Polignac number, because 11000000211209 - 2¹² = 11000000207113 is a prime.

It is not a weakly prime, because it can be changed into another prime (11000000211709) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5500000105604 + 5500000105605.

It is an arithmetic number, because the mean of its divisors is an integer number (5500000105605).

Almost surely, 2^{11000000211209} is an apocalyptic number.

It is an amenable number.

11000000211209 is a deficient number, since it is larger than the sum of its proper divisors (1).

11000000211209 is an equidigital number, since it uses as much as digits as its factorization.

11000000211209 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 36, while the sum is 17.

The spelling of 11000000211209 in words is "eleven trillion, two hundred eleven thousand, two hundred nine".