1113122111 has 4 divisors (see below), whose sum is σ = 1124143224. Its totient is φ = 1102101000.

The previous prime is 1113122093. The next prime is 1113122119. The reversal of 1113122111 is 1112213111.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1112213111 = 101 ⋅11012011.

It is a cyclic number.

It is not a de Polignac number, because 1113122111 - 2¹⁴ = 1113105727 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 (1113122119) 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, 5510405 + ... + 5510606.

It is an arithmetic number, because the mean of its divisors is an integer number (281035806).

Almost surely, 2^1113122111 is an apocalyptic number.

1113122111 is a deficient number, since it is larger than the sum of its proper divisors (11021113).

1113122111 is a wasteful number, since it uses less digits than its factorization.

1113122111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11021112.

The product of its digits is 12, while the sum is 14.

The square root of 1113122111 is about 33363.4846950974. The cubic root of 1113122111 is about 1036.3686564716.

Adding to 1113122111 its reverse (1112213111), we get a palindrome (2225335222).

The spelling of 1113122111 in words is "one billion, one hundred thirteen million, one hundred twenty-two thousand, one hundred eleven".