1112112221201 has 4 divisors (see below), whose sum is σ = 1177530587172. Its totient is φ = 1046693855232.

The previous prime is 1112112221189. The next prime is 1112112221261. The reversal of 1112112221201 is 1021222112111.

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 639758422801 + 472353798400 = 799849^2 + 687280^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1112112221201 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (17), and also a Moran number because the ratio is a prime number: 65418365953 = 1112112221201 / (1 + 1 + 1 + 2 + 1 + 1 + 2 + 2 + 2 + 1 + 2 + 0 + 1).

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 1112112221201.

It is not an unprimeable number, because it can be changed into a prime (1112112221261) 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, 32709182960 + ... + 32709182993.

It is an arithmetic number, because the mean of its divisors is an integer number (294382646793).

Almost surely, 2^{1112112221201} is an apocalyptic number.

It is an amenable number.

1112112221201 is a deficient number, since it is larger than the sum of its proper divisors (65418365971).

1112112221201 is an equidigital number, since it uses as much as digits as its factorization.

1112112221201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 65418365970.

The product of its (nonzero) digits is 32, while the sum is 17.

Adding to 1112112221201 its reverse (1021222112111), we get a palindrome (2133334333312).

The spelling of 1112112221201 in words is "one trillion, one hundred twelve billion, one hundred twelve million, two hundred twenty-one thousand, two hundred one".