1421303221333 has 4 divisors (see below), whose sum is σ = 1421581531360. Its totient is φ = 1421024911308.

The previous prime is 1421303221301. The next prime is 1421303221363. The reversal of 1421303221333 is 3331223031241.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1421303221333 - 2⁵ = 1421303221301 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 (1421303221363) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 139147353 + ... + 139157566.

It is an arithmetic number, because the mean of its divisors is an integer number (355395382840).

Almost surely, 2^{1421303221333} is an apocalyptic number.

It is an amenable number.

1421303221333 is a deficient number, since it is larger than the sum of its proper divisors (278310027).

1421303221333 is an equidigital number, since it uses as much as digits as its factorization.

1421303221333 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 278310026.

The product of its (nonzero) digits is 7776, while the sum is 28.

Adding to 1421303221333 its reverse (3331223031241), we get a palindrome (4752526252574).

The spelling of 1421303221333 in words is "one trillion, four hundred twenty-one billion, three hundred three million, two hundred twenty-one thousand, three hundred thirty-three".