11323111321021 has 4 divisors (see below), whose sum is σ = 11325413239200. Its totient is φ = 11320809402844.

The previous prime is 11323111321013. The next prime is 11323111321057. The reversal of 11323111321021 is 12012311132311.

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 11323111321021 - 2³ = 11323111321013 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 11323111320983 and 11323111321001.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11323111321061) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1150951711 + ... + 1150961548.

It is an arithmetic number, because the mean of its divisors is an integer number (2831353309800).

Almost surely, 2^{11323111321021} is an apocalyptic number.

It is an amenable number.

11323111321021 is a deficient number, since it is larger than the sum of its proper divisors (2301918179).

11323111321021 is an equidigital number, since it uses as much as digits as its factorization.

11323111321021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2301918178.

The product of its (nonzero) digits is 216, while the sum is 22.

Adding to 11323111321021 its reverse (12012311132311), we get a palindrome (23335422453332).

The spelling of 11323111321021 in words is "eleven trillion, three hundred twenty-three billion, one hundred eleven million, three hundred twenty-one thousand, twenty-one".