1111056005 has 4 divisors (see below), whose sum is σ = 1333267212. Its totient is φ = 888844800.

The previous prime is 1111055999. The next prime is 1111056041. The reversal of 1111056005 is 5006501111.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 477728449 + 633327556 = 21857^2 + 25166^2 .

It is not a de Polignac number, because 1111056005 - 2⁶ = 1111055941 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 111105596 + ... + 111105605.

It is an arithmetic number, because the mean of its divisors is an integer number (333316803).

Almost surely, 2^1111056005 is an apocalyptic number.

It is an amenable number.

1111056005 is a deficient number, since it is larger than the sum of its proper divisors (222211207).

1111056005 is an equidigital number, since it uses as much as digits as its factorization.

1111056005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 222211206.

The product of its (nonzero) digits is 150, while the sum is 20.

The square root of 1111056005 is about 33332.5067314176. The cubic root of 1111056005 is about 1035.7270456182.

Adding to 1111056005 its reverse (5006501111), we get a palindrome (6117557116).

The spelling of 1111056005 in words is "one billion, one hundred eleven million, fifty-six thousand, five".