321421102221403 has 4 divisors (see below), whose sum is σ = 321421654960560. Its totient is φ = 321420549482248.

The previous prime is 321421102221397. The next prime is 321421102221463. The reversal of 321421102221403 is 304122201124123.

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 321421102221403 - 2¹⁷ = 321421102090331 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (321421102221463) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 275496400 + ... + 276660637.

It is an arithmetic number, because the mean of its divisors is an integer number (80355413740140).

Almost surely, 2^{321421102221403} is an apocalyptic number.

321421102221403 is a deficient number, since it is larger than the sum of its proper divisors (552739157).

321421102221403 is an equidigital number, since it uses as much as digits as its factorization.

321421102221403 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 552739156.

The product of its (nonzero) digits is 4608, while the sum is 28.

Adding to 321421102221403 its reverse (304122201124123), we get a palindrome (625543303345526).

The spelling of 321421102221403 in words is "three hundred twenty-one trillion, four hundred twenty-one billion, one hundred two million, two hundred twenty-one thousand, four hundred three".