11011220122009 has 2 divisors, whose sum is σ = 11011220122010. Its totient is φ = 11011220122008.

The previous prime is 11011220121943. The next prime is 11011220122027. The reversal of 11011220122009 is 90022102211011.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 8893039694400 + 2118180427609 = 2982120^2 + 1455397^2 .

It is a cyclic number.

It is not a de Polignac number, because 11011220122009 - 2⁹ = 11011220121497 is a prime.

It is not a weakly prime, because it can be changed into another prime (11011220120009) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5505610061004 + 5505610061005.

It is an arithmetic number, because the mean of its divisors is an integer number (5505610061005).

Almost surely, 2^{11011220122009} is an apocalyptic number.

It is an amenable number.

11011220122009 is a deficient number, since it is larger than the sum of its proper divisors (1).

11011220122009 is an equidigital number, since it uses as much as digits as its factorization.

11011220122009 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 144, while the sum is 22.

The spelling of 11011220122009 in words is "eleven trillion, eleven billion, two hundred twenty million, one hundred twenty-two thousand, nine".