212320559999 has 4 divisors (see below), whose sum is σ = 212406417936. Its totient is φ = 212234702064.

The previous prime is 212320559989. The next prime is 212320560007. The reversal of 212320559999 is 999955023212.

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 212320559999 - 2⁸ = 212320559743 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212320559989) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 42925259 + ... + 42930204.

It is an arithmetic number, because the mean of its divisors is an integer number (53101604484).

Almost surely, 2^212320559999 is an apocalyptic number.

212320559999 is a deficient number, since it is larger than the sum of its proper divisors (85857937).

212320559999 is an equidigital number, since it uses as much as digits as its factorization.

212320559999 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 85857936.

The product of its (nonzero) digits is 3936600, while the sum is 56.

The spelling of 212320559999 in words is "two hundred twelve billion, three hundred twenty million, five hundred fifty-nine thousand, nine hundred ninety-nine".