11021002011209 has 2 divisors, whose sum is σ = 11021002011210. Its totient is φ = 11021002011208.

The previous prime is 11021002011143. The next prime is 11021002011221. The reversal of 11021002011209 is 90211020012011.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 8744162444809 + 2276839566400 = 2957053^2 + 1508920^2 .

It is an emirp because it is prime and its reverse (90211020012011) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11021002011209 is a prime.

It is not a weakly prime, because it can be changed into another prime (11021002001209) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5510501005604 + 5510501005605.

It is an arithmetic number, because the mean of its divisors is an integer number (5510501005605).

Almost surely, 2^{11021002011209} is an apocalyptic number.

It is an amenable number.

11021002011209 is a deficient number, since it is larger than the sum of its proper divisors (1).

11021002011209 is an equidigital number, since it uses as much as digits as its factorization.

11021002011209 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 72, while the sum is 20.

The spelling of 11021002011209 in words is "eleven trillion, twenty-one billion, two million, eleven thousand, two hundred nine".