111112112210201 has 4 divisors (see below), whose sum is σ = 111112158394212. Its totient is φ = 111112066026192.

The previous prime is 111112112210137. The next prime is 111112112210273. The reversal of 111112112210201 is 102012211211111.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 57231887910976 + 53880224299225 = 7565176^2 + 7340315^2 .

It is a cyclic number.

It is not a de Polignac number, because 111112112210201 - 2⁶ = 111112112210137 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 111112112210201.

It is not an unprimeable number, because it can be changed into a prime (111112112210401) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 19272650 + ... + 24365123.

It is an arithmetic number, because the mean of its divisors is an integer number (27778039598553).

Almost surely, 2^{111112112210201} is an apocalyptic number.

It is an amenable number.

111112112210201 is a deficient number, since it is larger than the sum of its proper divisors (46184011).

111112112210201 is an equidigital number, since it uses as much as digits as its factorization.

111112112210201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46184010.

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

Adding to 111112112210201 its reverse (102012211211111), we get a palindrome (213124323421312).

The spelling of 111112112210201 in words is "one hundred eleven trillion, one hundred twelve billion, one hundred twelve million, two hundred ten thousand, two hundred one".