111111022222201 has 4 divisors (see below), whose sum is σ = 112769395688272. Its totient is φ = 109452648756132.

The previous prime is 111111022222199. The next prime is 111111022222261. The reversal of 111111022222201 is 102222220111111.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 111111022222201 - 2¹ = 111111022222199 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (111111022222261) 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, 829186732935 + ... + 829186733068.

It is an arithmetic number, because the mean of its divisors is an integer number (28192348922068).

Almost surely, 2^{111111022222201} is an apocalyptic number.

It is an amenable number.

111111022222201 is a deficient number, since it is larger than the sum of its proper divisors (1658373466071).

111111022222201 is an equidigital number, since it uses as much as digits as its factorization.

111111022222201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1658373466070.

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

Adding to 111111022222201 its reverse (102222220111111), we get a palindrome (213333242333312).

The spelling of 111111022222201 in words is "one hundred eleven trillion, one hundred eleven billion, twenty-two million, two hundred twenty-two thousand, two hundred one".