1323230042221 has 4 divisors (see below), whose sum is σ = 1325439108000. Its totient is φ = 1321020976444.

The previous prime is 1323230042209. The next prime is 1323230042269. The reversal of 1323230042221 is 1222400323231.

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 1323230042221 - 2¹¹ = 1323230040173 is a prime.

It is a super-2 number, since 2×1323230042221² (a number of 25 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 (1323230072221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1104531991 + ... + 1104533188.

It is an arithmetic number, because the mean of its divisors is an integer number (331359777000).

Almost surely, 2^{1323230042221} is an apocalyptic number.

It is an amenable number.

1323230042221 is a deficient number, since it is larger than the sum of its proper divisors (2209065779).

1323230042221 is an equidigital number, since it uses as much as digits as its factorization.

1323230042221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2209065778.

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

Adding to 1323230042221 its reverse (1222400323231), we get a palindrome (2545630365452).

The spelling of 1323230042221 in words is "one trillion, three hundred twenty-three billion, two hundred thirty million, forty-two thousand, two hundred twenty-one".