11220111311 has 8 divisors (see below), whose sum is σ = 11516965248. Its totient is φ = 10926900000.

The previous prime is 11220111269. The next prime is 11220111317. The reversal of 11220111311 is 11311102211.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11220111311 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11220111317) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 904415 + ... + 916736.

It is an arithmetic number, because the mean of its divisors is an integer number (1439620656).

Almost surely, 2^11220111311 is an apocalyptic number.

11220111311 is a deficient number, since it is larger than the sum of its proper divisors (296853937).

11220111311 is a wasteful number, since it uses less digits than its factorization.

11220111311 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1821313.

The product of its (nonzero) digits is 12, while the sum is 14.

Adding to 11220111311 its reverse (11311102211), we get a palindrome (22531213522).

The spelling of 11220111311 in words is "eleven billion, two hundred twenty million, one hundred eleven thousand, three hundred eleven".