2111055217 has 4 divisors (see below), whose sum is σ = 2124006640. Its totient is φ = 2098103796.

The previous prime is 2111055179. The next prime is 2111055251. The reversal of 2111055217 is 7125501112.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2111055217 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2111055191 and 2111055200.

It is not an unprimeable number, because it can be changed into a prime (2111050217) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6475467 + ... + 6475792.

It is an arithmetic number, because the mean of its divisors is an integer number (531001660).

Almost surely, 2^2111055217 is an apocalyptic number.

It is an amenable number.

2111055217 is a deficient number, since it is larger than the sum of its proper divisors (12951423).

2111055217 is a wasteful number, since it uses less digits than its factorization.

2111055217 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12951422.

The product of its (nonzero) digits is 700, while the sum is 25.

The square root of 2111055217 is about 45946.2209218560. The cubic root of 2111055217 is about 1282.8223888231.

Adding to 2111055217 its reverse (7125501112), we get a palindrome (9236556329).

The spelling of 2111055217 in words is "two billion, one hundred eleven million, fifty-five thousand, two hundred seventeen".