421003324213 has 4 divisors (see below), whose sum is σ = 421004738700. Its totient is φ = 421001909728.

The previous prime is 421003324207. The next prime is 421003324219. The reversal of 421003324213 is 312423300124.

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 is an interprime number because it is at equal distance from previous prime (421003324207) and next prime (421003324219).

It can be written as a sum of positive squares in 2 ways, for example, as 181277538289 + 239725785924 = 425767^2 + 489618^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-421003324213 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 (421003324219) 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, 68488 + ... + 920161.

It is an arithmetic number, because the mean of its divisors is an integer number (105251184675).

Almost surely, 2^421003324213 is an apocalyptic number.

It is an amenable number.

421003324213 is a deficient number, since it is larger than the sum of its proper divisors (1414487).

421003324213 is an equidigital number, since it uses as much as digits as its factorization.

421003324213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1414486.

The product of its (nonzero) digits is 3456, while the sum is 25.

Adding to 421003324213 its reverse (312423300124), we get a palindrome (733426624337).

The spelling of 421003324213 in words is "four hundred twenty-one billion, three million, three hundred twenty-four thousand, two hundred thirteen".