11012011009 has 2 divisors, whose sum is σ = 11012011010. Its totient is φ = 11012011008.

The previous prime is 11012010979. The next prime is 11012011019. The reversal of 11012011009 is 90011021011.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 7504410384 + 3507600625 = 86628^2 + 59225^2 .

It is a cyclic number.

It is not a de Polignac number, because 11012011009 - 2¹⁷ = 11011879937 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 11012010983 and 11012011001.

It is not a weakly prime, because it can be changed into another prime (11012011019) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5506005504 + 5506005505.

It is an arithmetic number, because the mean of its divisors is an integer number (5506005505).

Almost surely, 2^11012011009 is an apocalyptic number.

It is an amenable number.

11012011009 is a deficient number, since it is larger than the sum of its proper divisors (1).

11012011009 is an equidigital number, since it uses as much as digits as its factorization.

11012011009 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 18, while the sum is 16.

The spelling of 11012011009 in words is "eleven billion, twelve million, eleven thousand, nine".