11022111209 has 2 divisors, whose sum is σ = 11022111210. Its totient is φ = 11022111208.

The previous prime is 11022111197. The next prime is 11022111227. The reversal of 11022111209 is 90211122011.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 10995619600 + 26491609 = 104860^2 + 5147^2 .

It is a cyclic number.

It is not a de Polignac number, because 11022111209 - 2¹² = 11022107113 is a prime.

It is a plaindrome in base 15.

It is not a weakly prime, because it can be changed into another prime (11022114209) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5511055604 + 5511055605.

It is an arithmetic number, because the mean of its divisors is an integer number (5511055605).

Almost surely, 2^11022111209 is an apocalyptic number.

It is an amenable number.

11022111209 is a deficient number, since it is larger than the sum of its proper divisors (1).

11022111209 is an equidigital number, since it uses as much as digits as its factorization.

11022111209 is an odious number, because the sum of its binary digits is odd.

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

The spelling of 11022111209 in words is "eleven billion, twenty-two million, one hundred eleven thousand, two hundred nine".