21233030201321 has 4 divisors (see below), whose sum is σ = 21592912069200. Its totient is φ = 20873148333444.

The previous prime is 21233030201303. The next prime is 21233030201347. The reversal of 21233030201321 is 12310203033212.

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 a de Polignac number, because none of the positive numbers 2^k-21233030201321 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21233030201371) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 179940933851 + ... + 179940933968.

It is an arithmetic number, because the mean of its divisors is an integer number (5398228017300).

Almost surely, 2^{21233030201321} is an apocalyptic number.

It is an amenable number.

21233030201321 is a deficient number, since it is larger than the sum of its proper divisors (359881867879).

21233030201321 is an equidigital number, since it uses as much as digits as its factorization.

21233030201321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 359881867878.

The product of its (nonzero) digits is 1296, while the sum is 23.

Adding to 21233030201321 its reverse (12310203033212), we get a palindrome (33543233234533).

The spelling of 21233030201321 in words is "twenty-one trillion, two hundred thirty-three billion, thirty million, two hundred one thousand, three hundred twenty-one".