11133321209 has 2 divisors, whose sum is σ = 11133321210. Its totient is φ = 11133321208.

The previous prime is 11133321169. The next prime is 11133321229. The reversal of 11133321209 is 90212333111.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 11066408809 + 66912400 = 105197^2 + 8180^2 .

It is a cyclic number.

It is not a de Polignac number, because 11133321209 - 2¹² = 11133317113 is a prime.

It is a super-2 number, since 2×11133321209² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (11133321229) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5566660604 + 5566660605.

It is an arithmetic number, because the mean of its divisors is an integer number (5566660605).

Almost surely, 2^11133321209 is an apocalyptic number.

It is an amenable number.

11133321209 is a deficient number, since it is larger than the sum of its proper divisors (1).

11133321209 is an equidigital number, since it uses as much as digits as its factorization.

11133321209 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 972, while the sum is 26.

The spelling of 11133321209 in words is "eleven billion, one hundred thirty-three million, three hundred twenty-one thousand, two hundred nine".