111210121112201 has 16 divisors (see below), whose sum is σ = 112519534665600. Its totient is φ = 109902049918848.

The previous prime is 111210121112191. The next prime is 111210121112267. The reversal of 111210121112201 is 102211121012111.

It is a cyclic number.

It is not a de Polignac number, because 111210121112201 - 2¹⁸ = 111210120850057 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 111210121112201.

It is not an unprimeable number, because it can be changed into a prime (111210121142201) 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 15 ways as a sum of consecutive naturals, for example, 1931138330 + ... + 1931195916.

It is an arithmetic number, because the mean of its divisors is an integer number (7032470916600).

Almost surely, 2^{111210121112201} is an apocalyptic number.

It is an amenable number.

111210121112201 is a deficient number, since it is larger than the sum of its proper divisors (1309413553399).

111210121112201 is an equidigital number, since it uses as much as digits as its factorization.

111210121112201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 68848.

The product of its (nonzero) digits is 16, while the sum is 17.

Adding to 111210121112201 its reverse (102211121012111), we get a palindrome (213421242124312).

The spelling of 111210121112201 in words is "one hundred eleven trillion, two hundred ten billion, one hundred twenty-one million, one hundred twelve thousand, two hundred one".