2111512005 has 48 divisors (see below), whose sum is σ = 3715717824. Its totient is φ = 1109099520.

The previous prime is 2111511977. The next prime is 2111512031. The reversal of 2111512005 is 5002151112.

It is not a de Polignac number, because 2111512005 - 2²⁵ = 2077957573 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 989790 + ... + 991920.

It is an arithmetic number, because the mean of its divisors is an integer number (77410788).

Almost surely, 2^2111512005 is an apocalyptic number.

It is an amenable number.

2111512005 is a deficient number, since it is larger than the sum of its proper divisors (1604205819).

2111512005 is a wasteful number, since it uses less digits than its factorization.

2111512005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2466 (or 2463 counting only the distinct ones).

The product of its (nonzero) digits is 100, while the sum is 18.

The square root of 2111512005 is about 45951.1915514712. The cubic root of 2111512005 is about 1282.9149074222.

Adding to 2111512005 its reverse (5002151112), we get a palindrome (7113663117).

The spelling of 2111512005 in words is "two billion, one hundred eleven million, five hundred twelve thousand, five".