4021321402303 has 2 divisors, whose sum is σ = 4021321402304. Its totient is φ = 4021321402302.

The previous prime is 4021321402291. The next prime is 4021321402361. The reversal of 4021321402303 is 3032041231204.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-4021321402303 is a prime.

It is a super-4 number, since 4×4021321402303⁴ (a number of 52 digits) contains 4444 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4021321402363) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2010660701151 + 2010660701152.

It is an arithmetic number, because the mean of its divisors is an integer number (2010660701152).

Almost surely, 2^{4021321402303} is an apocalyptic number.

4021321402303 is a deficient number, since it is larger than the sum of its proper divisors (1).

4021321402303 is an equidigital number, since it uses as much as digits as its factorization.

4021321402303 is an evil number, because the sum of its binary digits is even.

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

Adding to 4021321402303 its reverse (3032041231204), we get a palindrome (7053362633507).

The spelling of 4021321402303 in words is "four trillion, twenty-one billion, three hundred twenty-one million, four hundred two thousand, three hundred three".