212240885508 has 36 divisors (see below), whose sum is σ = 536552881228. Its totient is φ = 70739697600.

The previous prime is 212240885489. The next prime is 212240885603. The reversal of 212240885508 is 805588042212.

212240885508 is a `hidden beast` number, since 2 + 1 + 22 + 40 + 8 + 85 + 508 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 89683478784 + 122557406724 = 299472^2 + 350082^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is an unprimeable number.

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 11 ways as a sum of consecutive naturals, for example, 58710 + ... + 654162.

Almost surely, 2^212240885508 is an apocalyptic number.

It is an amenable number.

212240885508 is an abundant number, since it is smaller than the sum of its proper divisors (324311995720).

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

212240885508 is a wasteful number, since it uses less digits than its factorization.

212240885508 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 605364 (or 605359 counting only the distinct ones).

The product of its (nonzero) digits is 409600, while the sum is 45.

The spelling of 212240885508 in words is "two hundred twelve billion, two hundred forty million, eight hundred eighty-five thousand, five hundred eight".