111201222111211 has 4 divisors (see below), whose sum is σ = 117742470470712. Its totient is φ = 104659973751712.

The previous prime is 111201222111167. The next prime is 111201222111227. The reversal of 111201222111211 is 112111222102111.

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 111201222111211 - 2¹³ = 111201222103019 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (111201222111911) 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, 3270624179725 + ... + 3270624179758.

It is an arithmetic number, because the mean of its divisors is an integer number (29435617617678).

Almost surely, 2^{111201222111211} is an apocalyptic number.

111201222111211 is a deficient number, since it is larger than the sum of its proper divisors (6541248359501).

111201222111211 is an equidigital number, since it uses as much as digits as its factorization.

111201222111211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6541248359500.

The product of its (nonzero) digits is 32, while the sum is 19.

Adding to 111201222111211 its reverse (112111222102111), we get a palindrome (223312444213322).

The spelling of 111201222111211 in words is "one hundred eleven trillion, two hundred one billion, two hundred twenty-two million, one hundred eleven thousand, two hundred eleven".