1323220312011 has 8 divisors (see below), whose sum is σ = 1900008653200. Its totient is φ = 814289422752.

The previous prime is 1323220311971. The next prime is 1323220312033. The reversal of 1323220312011 is 1102130223231.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1323220312011 - 2⁷ = 1323220311883 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1323220312411) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16964362936 + ... + 16964363013.

It is an arithmetic number, because the mean of its divisors is an integer number (237501081650).

Almost surely, 2^{1323220312011} is an apocalyptic number.

1323220312011 is a deficient number, since it is larger than the sum of its proper divisors (576788341189).

1323220312011 is a wasteful number, since it uses less digits than its factorization.

1323220312011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33928725965.

The product of its (nonzero) digits is 432, while the sum is 21.

Adding to 1323220312011 its reverse (1102130223231), we get a palindrome (2425350535242).

The spelling of 1323220312011 in words is "one trillion, three hundred twenty-three billion, two hundred twenty million, three hundred twelve thousand, eleven".