11220113209 has 2 divisors, whose sum is σ = 11220113210. Its totient is φ = 11220113208.

The previous prime is 11220113167. The next prime is 11220113257. The reversal of 11220113209 is 90231102211.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 9208321600 + 2011791609 = 95960^2 + 44853^2 .

It is a cyclic number.

It is not a de Polignac number, because 11220113209 - 2²¹ = 11218016057 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 11220113209.

It is not a weakly prime, because it can be changed into another prime (11220113279) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5610056604 + 5610056605.

It is an arithmetic number, because the mean of its divisors is an integer number (5610056605).

Almost surely, 2^11220113209 is an apocalyptic number.

It is an amenable number.

11220113209 is a deficient number, since it is larger than the sum of its proper divisors (1).

11220113209 is an equidigital number, since it uses as much as digits as its factorization.

11220113209 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 216, while the sum is 22.

The spelling of 11220113209 in words is "eleven billion, two hundred twenty million, one hundred thirteen thousand, two hundred nine".