11220111309 has 32 divisors (see below), whose sum is σ = 16530814080. Its totient is φ = 6712761600.

The previous prime is 11220111269. The next prime is 11220111317. The reversal of 11220111309 is 90311102211.

It is a happy number.

It is not a de Polignac number, because 11220111309 - 2¹⁹ = 11219587021 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11220111379) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 990739 + ... + 1001999.

It is an arithmetic number, because the mean of its divisors is an integer number (516587940).

Almost surely, 2^11220111309 is an apocalyptic number.

It is an amenable number.

11220111309 is a deficient number, since it is larger than the sum of its proper divisors (5310702771).

11220111309 is a wasteful number, since it uses less digits than its factorization.

11220111309 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11661.

The product of its (nonzero) digits is 108, while the sum is 21.

The spelling of 11220111309 in words is "eleven billion, two hundred twenty million, one hundred eleven thousand, three hundred nine".