111100201021201 has 32 divisors (see below), whose sum is σ = 129851172864000. Its totient is φ = 95017031907840.

The previous prime is 111100201021177. The next prime is 111100201021213. The reversal of 111100201021201 is 102120102001111.

It is a happy number.

It is not a de Polignac number, because 111100201021201 - 2⁵ = 111100201021169 is a prime.

It is not an unprimeable number, because it can be changed into a prime (111100201022201) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 421624176 + ... + 421887598.

It is an arithmetic number, because the mean of its divisors is an integer number (4057849152000).

Almost surely, 2^{111100201021201} is an apocalyptic number.

It is an amenable number.

111100201021201 is a deficient number, since it is larger than the sum of its proper divisors (18750971842799).

111100201021201 is an equidigital number, since it uses as much as digits as its factorization.

111100201021201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 266174 (or 266160 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 13.

Adding to 111100201021201 its reverse (102120102001111), we get a palindrome (213220303022312).

The spelling of 111100201021201 in words is "one hundred eleven trillion, one hundred billion, two hundred one million, twenty-one thousand, two hundred one".