11112421111 has 24 divisors (see below), whose sum is σ = 12885465600. Its totient is φ = 9549579600.

The previous prime is 11112421091. The next prime is 11112421123.

It is a happy number.

11112421111 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 11112421111 - 2⁵ = 11112421079 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11112421141) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1096176 + ... + 1106266.

It is an arithmetic number, because the mean of its divisors is an integer number (536894400).

Almost surely, 2^11112421111 is an apocalyptic number.

11112421111 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

11112421111 is a deficient number, since it is larger than the sum of its proper divisors (1773044489).

11112421111 is a wasteful number, since it uses less digits than its factorization.

11112421111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10611 (or 10600 counting only the distinct ones).

The product of its digits is 16, while the sum is 16.

The spelling of 11112421111 in words is "eleven billion, one hundred twelve million, four hundred twenty-one thousand, one hundred eleven".