5218507212 has 12 divisors (see below), whose sum is σ = 12176516856. Its totient is φ = 1739502400.

The previous prime is 5218507207. The next prime is 5218507213. The reversal of 5218507212 is 2127058125.

It is a tau number, because it is divible by the number of its divisors (12).

It is an alternating number because its digits alternate between odd and even.

It is not an unprimeable number, because it can be changed into a prime (5218507213) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 217437789 + ... + 217437812.

It is an arithmetic number, because the mean of its divisors is an integer number (1014709738).

Almost surely, 2^5218507212 is an apocalyptic number.

It is an amenable number.

5218507212 is an abundant number, since it is smaller than the sum of its proper divisors (6958009644).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

5218507212 is a wasteful number, since it uses less digits than its factorization.

5218507212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 434875608 (or 434875606 counting only the distinct ones).

The product of its (nonzero) digits is 11200, while the sum is 33.

The square root of 5218507212 is about 72239.2359594147. The cubic root of 5218507212 is about 1734.5311195220.

The spelling of 5218507212 in words is "five billion, two hundred eighteen million, five hundred seven thousand, two hundred twelve".