321321010103 has 4 divisors (see below), whose sum is σ = 321399788640. Its totient is φ = 321242231568.

The previous prime is 321321010069. The next prime is 321321010111. The reversal of 321321010103 is 301010123123.

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 321321010103 - 2¹² = 321321006007 is a prime.

It is a super-2 number, since 2×321321010103² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (321321010303) 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, 39383150 + ... + 39391307.

It is an arithmetic number, because the mean of its divisors is an integer number (80349947160).

Almost surely, 2^321321010103 is an apocalyptic number.

321321010103 is a deficient number, since it is larger than the sum of its proper divisors (78778537).

321321010103 is an equidigital number, since it uses as much as digits as its factorization.

321321010103 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 78778536.

The product of its (nonzero) digits is 108, while the sum is 17.

Adding to 321321010103 its reverse (301010123123), we get a palindrome (622331133226).

The spelling of 321321010103 in words is "three hundred twenty-one billion, three hundred twenty-one million, ten thousand, one hundred three".