112221211222111 has 4 divisors (see below), whose sum is σ = 115841250293824. Its totient is φ = 108601172150400.

The previous prime is 112221211222103. The next prime is 112221211222117. The reversal of 112221211222111 is 111222112122211.

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

It is a cyclic number.

It is not a de Polignac number, because 112221211222111 - 2³ = 112221211222103 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (112221211222117) 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, 1810019535810 + ... + 1810019535871.

It is an arithmetic number, because the mean of its divisors is an integer number (28960312573456).

Almost surely, 2^{112221211222111} is an apocalyptic number.

112221211222111 is a deficient number, since it is larger than the sum of its proper divisors (3620039071713).

112221211222111 is an equidigital number, since it uses as much as digits as its factorization.

112221211222111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3620039071712.

The product of its digits is 128, while the sum is 22.

Adding to 112221211222111 its reverse (111222112122211), we get a palindrome (223443323344322).

The spelling of 112221211222111 in words is "one hundred twelve trillion, two hundred twenty-one billion, two hundred eleven million, two hundred twenty-two thousand, one hundred eleven".