111201221112201 has 24 divisors (see below), whose sum is σ = 177194999947680. Its totient is φ = 66637435867200.

The previous prime is 111201221112199. The next prime is 111201221112203. The reversal of 111201221112201 is 102211122102111.

It is a happy number.

111201221112201 is a `hidden beast` number, since 1 + 11 + 201 + 221 + 11 + 220 + 1 = 666.

It is an interprime number because it is at equal distance from previous prime (111201221112199) and next prime (111201221112203).

It is not a de Polignac number, because 111201221112201 - 2¹ = 111201221112199 is a prime.

It is not an unprimeable number, because it can be changed into a prime (111201221112203) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 6310354435 + ... + 6310372056.

It is an arithmetic number, because the mean of its divisors is an integer number (7383124997820).

Almost surely, 2^{111201221112201} is an apocalyptic number.

111201221112201 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

111201221112201 is a deficient number, since it is larger than the sum of its proper divisors (65993778835479).

111201221112201 is a wasteful number, since it uses less digits than its factorization.

111201221112201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12620726597 (or 12620726594 counting only the distinct ones).

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

Adding to 111201221112201 its reverse (102211122102111), we get a palindrome (213412343214312).

The spelling of 111201221112201 in words is "one hundred eleven trillion, two hundred one billion, two hundred twenty-one million, one hundred twelve thousand, two hundred one".