212500003999 has 4 divisors (see below), whose sum is σ = 212973278400. Its totient is φ = 212026729600.

The previous prime is 212500003993. The next prime is 212500004011. The reversal of 212500003999 is 999300005212.

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 212500003999 - 2⁵ = 212500003967 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 (212500003993) 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, 236636527 + ... + 236637424.

It is an arithmetic number, because the mean of its divisors is an integer number (53243319600).

Almost surely, 2^212500003999 is an apocalyptic number.

212500003999 is a deficient number, since it is larger than the sum of its proper divisors (473274401).

212500003999 is an equidigital number, since it uses as much as digits as its factorization.

212500003999 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 473274400.

The product of its (nonzero) digits is 43740, while the sum is 40.

The spelling of 212500003999 in words is "two hundred twelve billion, five hundred million, three thousand, nine hundred ninety-nine".