1323221321233 has 4 divisors (see below), whose sum is σ = 1512252938560. Its totient is φ = 1134189703908.

The previous prime is 1323221321221. The next prime is 1323221321263. The reversal of 1323221321233 is 3321231223231.

It is a happy number.

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 1323221321233 - 2¹³ = 1323221313041 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1323221321203) 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, 94515808653 + ... + 94515808666.

It is an arithmetic number, because the mean of its divisors is an integer number (378063234640).

Almost surely, 2^{1323221321233} is an apocalyptic number.

It is an amenable number.

1323221321233 is a deficient number, since it is larger than the sum of its proper divisors (189031617327).

1323221321233 is an equidigital number, since it uses as much as digits as its factorization.

1323221321233 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 189031617326.

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

Adding to 1323221321233 its reverse (3321231223231), we get a palindrome (4644452544464).

The spelling of 1323221321233 in words is "one trillion, three hundred twenty-three billion, two hundred twenty-one million, three hundred twenty-one thousand, two hundred thirty-three".