1323321212111 has 4 divisors (see below), whose sum is σ = 1335461773800. Its totient is φ = 1311180650424.

The previous prime is 1323321212077. The next prime is 1323321212113. The reversal of 1323321212111 is 1112121233231.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1323321212111 - 2²⁶ = 1323254103247 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 (1323321212113) 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, 6070280681 + ... + 6070280898.

It is an arithmetic number, because the mean of its divisors is an integer number (333865443450).

Almost surely, 2^{1323321212111} is an apocalyptic number.

1323321212111 is a deficient number, since it is larger than the sum of its proper divisors (12140561689).

1323321212111 is a wasteful number, since it uses less digits than its factorization.

1323321212111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12140561688.

The product of its digits is 432, while the sum is 23.

Adding to 1323321212111 its reverse (1112121233231), we get a palindrome (2435442445342).

The spelling of 1323321212111 in words is "one trillion, three hundred twenty-three billion, three hundred twenty-one million, two hundred twelve thousand, one hundred eleven".