111101111212201 has 32 divisors (see below), whose sum is σ = 123659361536256. Its totient is φ = 98974206720000.

The previous prime is 111101111212199. The next prime is 111101111212219. The reversal of 111101111212201 is 102212111101111.

It is a cyclic number.

It is not a de Polignac number, because 111101111212201 - 2¹ = 111101111212199 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (111101111212601) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 203074261 + ... + 203620621.

It is an arithmetic number, because the mean of its divisors is an integer number (3864355048008).

Almost surely, 2^{111101111212201} is an apocalyptic number.

111101111212201 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

111101111212201 is a deficient number, since it is larger than the sum of its proper divisors (12558250324055).

111101111212201 is a wasteful number, since it uses less digits than its factorization.

111101111212201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 548353.

The product of its (nonzero) digits is 8, while the sum is 16.

Adding to 111101111212201 its reverse (102212111101111), we get a palindrome (213313222313312).

The spelling of 111101111212201 in words is "one hundred eleven trillion, one hundred one billion, one hundred eleven million, two hundred twelve thousand, two hundred one".