2111504513105 has 12 divisors (see below), whose sum is σ = 2743706457180. Its totient is φ = 1559264870592.

The previous prime is 2111504513051. The next prime is 2111504513143. The reversal of 2111504513105 is 5013154051112.

It is a happy number.

It can be written as a sum of positive squares in 6 ways, for example, as 365639111761 + 1745865401344 = 604681^2 + 1321312^2 .

It is not a de Polignac number, because 2111504513105 - 2⁸ = 2111504512849 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1249410110 + ... + 1249411799.

It is an arithmetic number, because the mean of its divisors is an integer number (228642204765).

Almost surely, 2^{2111504513105} is an apocalyptic number.

It is an amenable number.

2111504513105 is a deficient number, since it is larger than the sum of its proper divisors (632201944075).

2111504513105 is a wasteful number, since it uses less digits than its factorization.

2111504513105 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2498821940 (or 2498821927 counting only the distinct ones).

The product of its (nonzero) digits is 3000, while the sum is 29.

Adding to 2111504513105 its reverse (5013154051112), we get a palindrome (7124658564217).

The spelling of 2111504513105 in words is "two trillion, one hundred eleven billion, five hundred four million, five hundred thirteen thousand, one hundred five".