212220112111 has 4 divisors (see below), whose sum is σ = 242537270992. Its totient is φ = 181902953232.

The previous prime is 212220112109. The next prime is 212220112121. The reversal of 212220112111 is 111211022212.

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

It is not a de Polignac number, because 212220112111 - 2¹ = 212220112109 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 (212220112121) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15158579430 + ... + 15158579443.

It is an arithmetic number, because the mean of its divisors is an integer number (60634317748).

Almost surely, 2^212220112111 is an apocalyptic number.

212220112111 is a deficient number, since it is larger than the sum of its proper divisors (30317158881).

212220112111 is an equidigital number, since it uses as much as digits as its factorization.

212220112111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30317158880.

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 212220112111 its reverse (111211022212), we get a palindrome (323431134323).

It can be divided in two parts, 2122201 and 12111, that added together give a palindrome (2134312).

The spelling of 212220112111 in words is "two hundred twelve billion, two hundred twenty million, one hundred twelve thousand, one hundred eleven".