2211112312111 has 4 divisors (see below), whose sum is σ = 2211174944392. Its totient is φ = 2211049679832.

The previous prime is 2211112312069. The next prime is 2211112312141. The reversal of 2211112312111 is 1112132111122.

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 2211112312111 - 2¹¹ = 2211112310063 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 (2211112312141) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 31263156 + ... + 31333801.

It is an arithmetic number, because the mean of its divisors is an integer number (552793736098).

Almost surely, 2^{2211112312111} is an apocalyptic number.

2211112312111 is a deficient number, since it is larger than the sum of its proper divisors (62632281).

2211112312111 is an equidigital number, since it uses as much as digits as its factorization.

2211112312111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 62632280.

The product of its digits is 48, while the sum is 19.

Adding to 2211112312111 its reverse (1112132111122), we get a palindrome (3323244423233).

The spelling of 2211112312111 in words is "two trillion, two hundred eleven billion, one hundred twelve million, three hundred twelve thousand, one hundred eleven".