111320221111 has 4 divisors (see below), whose sum is σ = 121440241224. Its totient is φ = 101200201000.

The previous prime is 111320221091. The next prime is 111320221141. The reversal of 111320221111 is 111122023111.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 111122023111 = 11 ⋅10102002101.

It is a cyclic number.

It is not a de Polignac number, because 111320221111 - 2¹³ = 111320212919 is a prime.

It is a super-4 number, since 4×111320221111⁴ (a number of 45 digits) contains 4444 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111320221141) 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, 5060010040 + ... + 5060010061.

It is an arithmetic number, because the mean of its divisors is an integer number (30360060306).

Almost surely, 2^111320221111 is an apocalyptic number.

111320221111 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

111320221111 is a deficient number, since it is larger than the sum of its proper divisors (10120020113).

111320221111 is a wasteful number, since it uses less digits than its factorization.

111320221111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10120020112.

The product of its (nonzero) digits is 24, while the sum is 16.

Adding to 111320221111 its reverse (111122023111), we get a palindrome (222442244222).

The spelling of 111320221111 in words is "one hundred eleven billion, three hundred twenty million, two hundred twenty-one thousand, one hundred eleven".