221120112210111 has 24 divisors (see below), whose sum is σ = 326195520740544. Its totient is φ = 144275117276160.

The previous prime is 221120112210089. The next prime is 221120112210113. The reversal of 221120112210111 is 111012211021122.

It is a happy number.

221120112210111 is a `hidden beast` number, since 2 + 211 + 20 + 112 + 210 + 111 = 666.

It is not a de Polignac number, because 221120112210111 - 2¹⁴ = 221120112193727 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221120112210113) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 30369135 + ... + 36939471.

It is an arithmetic number, because the mean of its divisors is an integer number (13591480030856).

Almost surely, 2^{221120112210111} is an apocalyptic number.

221120112210111 is a deficient number, since it is larger than the sum of its proper divisors (105075408530433).

221120112210111 is a wasteful number, since it uses less digits than its factorization.

221120112210111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6649951 (or 6649948 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 18.

Adding to 221120112210111 its reverse (111012211021122), we get a palindrome (332132323231233).

The spelling of 221120112210111 in words is "two hundred twenty-one trillion, one hundred twenty billion, one hundred twelve million, two hundred ten thousand, one hundred eleven".