210043324421 has 4 divisors (see below), whose sum is σ = 240049513632. Its totient is φ = 180037135212.

The previous prime is 210043324411. The next prime is 210043324541. The reversal of 210043324421 is 124423340012.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 210043324421 - 2¹⁴ = 210043308037 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 (210043324411) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 15003094595 + ... + 15003094608.

It is an arithmetic number, because the mean of its divisors is an integer number (60012378408).

Almost surely, 2^210043324421 is an apocalyptic number.

It is an amenable number.

210043324421 is a deficient number, since it is larger than the sum of its proper divisors (30006189211).

210043324421 is an equidigital number, since it uses as much as digits as its factorization.

210043324421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30006189210.

The product of its (nonzero) digits is 4608, while the sum is 26.

Adding to 210043324421 its reverse (124423340012), we get a palindrome (334466664433).

The spelling of 210043324421 in words is "two hundred ten billion, forty-three million, three hundred twenty-four thousand, four hundred twenty-one".