11021220222111 has 12 divisors (see below), whose sum is σ = 17366771259240. Its totient is φ = 6679527407280.

The previous prime is 11021220222109. The next prime is 11021220222127. The reversal of 11021220222111 is 11122202212011.

11021220222111 is a `hidden beast` number, since 110 + 2 + 1 + 220 + 222 + 111 = 666.

It is not a de Polignac number, because 11021220222111 - 2¹ = 11021220222109 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11021220222211) 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, 55662728296 + ... + 55662728493.

It is an arithmetic number, because the mean of its divisors is an integer number (1447230938270).

Almost surely, 2^{11021220222111} is an apocalyptic number.

11021220222111 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

11021220222111 is a deficient number, since it is larger than the sum of its proper divisors (6345551037129).

11021220222111 is a wasteful number, since it uses less digits than its factorization.

11021220222111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 111325456806 (or 111325456803 counting only the distinct ones).

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

Adding to 11021220222111 its reverse (11122202212011), we get a palindrome (22143422434122).

The spelling of 11021220222111 in words is "eleven trillion, twenty-one billion, two hundred twenty million, two hundred twenty-two thousand, one hundred eleven".