5218212011 has 4 divisors (see below), whose sum is σ = 5218393032. Its totient is φ = 5218030992.

The previous prime is 5218212007. The next prime is 5218212017. The reversal of 5218212011 is 1102128125.

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

It is a cyclic number.

It is not a de Polignac number, because 5218212011 - 2² = 5218212007 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (5218212017) 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, 36545 + ... + 108498.

It is an arithmetic number, because the mean of its divisors is an integer number (1304598258).

Almost surely, 2^5218212011 is an apocalyptic number.

5218212011 is a deficient number, since it is larger than the sum of its proper divisors (181021).

5218212011 is a wasteful number, since it uses less digits than its factorization.

5218212011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 181020.

The product of its (nonzero) digits is 320, while the sum is 23.

The square root of 5218212011 is about 72237.1927126186. The cubic root of 5218212011 is about 1734.4984125329.

The spelling of 5218212011 in words is "five billion, two hundred eighteen million, two hundred twelve thousand, eleven".