210403421213 has 4 divisors (see below), whose sum is σ = 210404413788. Its totient is φ = 210402428640.

The previous prime is 210403421203. The next prime is 210403421311. The reversal of 210403421213 is 312124304012.

210403421213 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 190747942009 + 19655479204 = 436747^2 + 140198^2 .

It is a cyclic number.

It is not a de Polignac number, because 210403421213 - 2¹⁸ = 210403159069 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 (210403421203) 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 3 ways as a sum of consecutive naturals, for example, 36056 + ... + 649697.

It is an arithmetic number, because the mean of its divisors is an integer number (52601103447).

Almost surely, 2^210403421213 is an apocalyptic number.

It is an amenable number.

210403421213 is a deficient number, since it is larger than the sum of its proper divisors (992575).

210403421213 is an equidigital number, since it uses as much as digits as its factorization.

210403421213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 992574.

The product of its (nonzero) digits is 1152, while the sum is 23.

Adding to 210403421213 its reverse (312124304012), we get a palindrome (522527725225).

The spelling of 210403421213 in words is "two hundred ten billion, four hundred three million, four hundred twenty-one thousand, two hundred thirteen".