111222201211201 has 4 divisors (see below), whose sum is σ = 111222255394692. Its totient is φ = 111222147027712.

The previous prime is 111222201211153. The next prime is 111222201211229. The reversal of 111222201211201 is 102112102222111.

It is a happy number.

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 30373060902976 + 80849140308225 = 5511176^2 + 8991615^2 .

It is a cyclic number.

It is not a de Polignac number, because 111222201211201 - 2⁹ = 111222201210689 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (111222201211301) 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, 23886280 + ... + 28160233.

It is an arithmetic number, because the mean of its divisors is an integer number (27805563848673).

Almost surely, 2^{111222201211201} is an apocalyptic number.

It is an amenable number.

111222201211201 is a deficient number, since it is larger than the sum of its proper divisors (54183491).

111222201211201 is an equidigital number, since it uses as much as digits as its factorization.

111222201211201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54183490.

The product of its (nonzero) digits is 64, while the sum is 19.

Adding to 111222201211201 its reverse (102112102222111), we get a palindrome (213334303433312).

The spelling of 111222201211201 in words is "one hundred eleven trillion, two hundred twenty-two billion, two hundred one million, two hundred eleven thousand, two hundred one".