212030805852 has 36 divisors (see below), whose sum is σ = 536029373880. Its totient is φ = 70668678432.

The previous prime is 212030805841. The next prime is 212030805863. The reversal of 212030805852 is 258508030212.

212030805852 is a `hidden beast` number, since 21 + 20 + 30 + 8 + 0 + 585 + 2 = 666.

212030805852 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (212030805841) and next prime (212030805863).

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

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 27618 + ... + 651785.

It is an arithmetic number, because the mean of its divisors is an integer number (14889704830).

Almost surely, 2^212030805852 is an apocalyptic number.

It is an amenable number.

212030805852 is an abundant number, since it is smaller than the sum of its proper divisors (323998568028).

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

212030805852 is a wasteful number, since it uses less digits than its factorization.

212030805852 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 688082 (or 688077 counting only the distinct ones).

The product of its (nonzero) digits is 38400, while the sum is 36.

The spelling of 212030805852 in words is "two hundred twelve billion, thirty million, eight hundred five thousand, eight hundred fifty-two".