11220221202111 has 6 divisors (see below), whose sum is σ = 16206986180840. Its totient is φ = 7480147468068.

The previous prime is 11220221202089. The next prime is 11220221202163. The reversal of 11220221202111 is 11120212202211.

11220221202111 is a `hidden beast` number, since 11 + 220 + 221 + 2 + 0 + 211 + 1 = 666.

It is not a de Polignac number, because 11220221202111 - 2⁷ = 11220221201983 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 (11220221202811) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 623345622331 + ... + 623345622348.

Almost surely, 2^{11220221202111} is an apocalyptic number.

11220221202111 is a deficient number, since it is larger than the sum of its proper divisors (4986764978729).

11220221202111 is a wasteful number, since it uses less digits than its factorization.

11220221202111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1246691244685 (or 1246691244682 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 18.

Adding to 11220221202111 its reverse (11120212202211), we get a palindrome (22340433404322).

The spelling of 11220221202111 in words is "eleven trillion, two hundred twenty billion, two hundred twenty-one million, two hundred two thousand, one hundred eleven".