11222220212011 has 12 divisors (see below), whose sum is σ = 11629993705200. Its totient is φ = 10828295709728.

The previous prime is 11222220211957. The next prime is 11222220212113. The reversal of 11222220212011 is 11021202222211.

It is a de Polignac number, because none of the positive numbers 2^k-11222220212011 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 11222220212011.

It is not an unprimeable number, because it can be changed into a prime (11222220212611) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2968516 + ... + 5590753.

It is an arithmetic number, because the mean of its divisors is an integer number (969166142100).

Almost surely, 2^{11222220212011} is an apocalyptic number.

11222220212011 is a deficient number, since it is larger than the sum of its proper divisors (407773493189).

11222220212011 is an equidigital number, since it uses as much as digits as its factorization.

11222220212011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8560886 (or 8560857 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 19.

Adding to 11222220212011 its reverse (11021202222211), we get a palindrome (22243422434222).

The spelling of 11222220212011 in words is "eleven trillion, two hundred twenty-two billion, two hundred twenty million, two hundred twelve thousand, eleven".