111122005 has 4 divisors (see below), whose sum is σ = 133346412. Its totient is φ = 88897600.

The previous prime is 111122003. The next prime is 111122041. The reversal of 111122005 is 500221111.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 500221111 = 13 ⋅38478547.

It can be written as a sum of positive squares in 2 ways, for example, as 43125489 + 67996516 = 6567^2 + 8246^2 .

It is not a de Polignac number, because 111122005 - 2¹ = 111122003 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 (111122003) 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, 11112196 + ... + 11112205.

It is an arithmetic number, because the mean of its divisors is an integer number (33336603).

Almost surely, 2^111122005 is an apocalyptic number.

It is an amenable number.

111122005 is a deficient number, since it is larger than the sum of its proper divisors (22224407).

111122005 is an equidigital number, since it uses as much as digits as its factorization.

111122005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22224406.

The product of its (nonzero) digits is 20, while the sum is 13.

The square root of 111122005 is about 10541.4422637512. The cubic root of 111122005 is about 480.7655679622.

Adding to 111122005 its reverse (500221111), we get a palindrome (611343116).

The spelling of 111122005 in words is "one hundred eleven million, one hundred twenty-two thousand, five".