111122212012111 has 4 divisors (see below), whose sum is σ = 111122530227000. Its totient is φ = 111121893797224.

The previous prime is 111122212012087. The next prime is 111122212012117. The reversal of 111122212012111 is 111210212221111.

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 111122212012111 - 2²⁵ = 111122178457679 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 (111122212012117) 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, 158583061 + ... + 159282238.

It is an arithmetic number, because the mean of its divisors is an integer number (27780632556750).

Almost surely, 2^{111122212012111} is an apocalyptic number.

111122212012111 is a deficient number, since it is larger than the sum of its proper divisors (318214889).

111122212012111 is an equidigital number, since it uses as much as digits as its factorization.

111122212012111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 318214888.

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

Adding to 111122212012111 its reverse (111210212221111), we get a palindrome (222332424233222).

The spelling of 111122212012111 in words is "one hundred eleven trillion, one hundred twenty-two billion, two hundred twelve million, twelve thousand, one hundred eleven".