221002022011111 has 16 divisors (see below), whose sum is σ = 243723973409280. Its totient is φ = 198723196847520.

The previous prime is 221002022011073. The next prime is 221002022011163. The reversal of 221002022011111 is 111110220200122.

It is a cyclic number.

It is not a de Polignac number, because 221002022011111 - 2¹⁹ = 221002021486823 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 (221002022011181) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 115294440 + ... + 117195613.

It is an arithmetic number, because the mean of its divisors is an integer number (15232748338080).

Almost surely, 2^{221002022011111} is an apocalyptic number.

221002022011111 is a deficient number, since it is larger than the sum of its proper divisors (22721951398169).

221002022011111 is a wasteful number, since it uses less digits than its factorization.

221002022011111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 232491006.

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 221002022011111 its reverse (111110220200122), we get a palindrome (332112242211233).

The spelling of 221002022011111 in words is "two hundred twenty-one trillion, two billion, twenty-two million, eleven thousand, one hundred eleven".