111230111211 has 4 divisors (see below), whose sum is σ = 148306814952. Its totient is φ = 74153407472.

The previous prime is 111230111191. The next prime is 111230111269. The reversal of 111230111211 is 112111032111.

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 111230111211 - 2¹¹ = 111230109163 is a prime.

It is a super-2 number, since 2×111230111211² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (111230116211) 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, 18538351866 + ... + 18538351871.

It is an arithmetic number, because the mean of its divisors is an integer number (37076703738).

Almost surely, 2^111230111211 is an apocalyptic number.

111230111211 is a deficient number, since it is larger than the sum of its proper divisors (37076703741).

111230111211 is an equidigital number, since it uses as much as digits as its factorization.

111230111211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37076703740.

The product of its (nonzero) digits is 12, while the sum is 15.

Adding to 111230111211 its reverse (112111032111), we get a palindrome (223341143322).

The spelling of 111230111211 in words is "one hundred eleven billion, two hundred thirty million, one hundred eleven thousand, two hundred eleven".