212000043021 has 16 divisors (see below), whose sum is σ = 304514482944. Its totient is φ = 130416922944.

The previous prime is 212000042977. The next prime is 212000043023. The reversal of 212000043021 is 120340000212.

212000043021 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 212000043021 - 2¹⁸ = 211999780877 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212000043023) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 814426 + ... + 1042731.

It is an arithmetic number, because the mean of its divisors is an integer number (19032155184).

Almost surely, 2^212000043021 is an apocalyptic number.

It is an amenable number.

212000043021 is a deficient number, since it is larger than the sum of its proper divisors (92514439923).

212000043021 is a wasteful number, since it uses less digits than its factorization.

212000043021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1860100.

The product of its (nonzero) digits is 96, while the sum is 15.

Adding to 212000043021 its reverse (120340000212), we get a palindrome (332340043233).

The spelling of 212000043021 in words is "two hundred twelve billion, forty-three thousand, twenty-one".