1323120202111 has 4 divisors (see below), whose sum is σ = 1323131908032. Its totient is φ = 1323108496192.

The previous prime is 1323120202099. The next prime is 1323120202123. The reversal of 1323120202111 is 1112020213231.

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

It is an interprime number because it is at equal distance from previous prime (1323120202099) and next prime (1323120202123).

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1323120202111 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 (1323120202171) 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, 5681746 + ... + 5910031.

It is an arithmetic number, because the mean of its divisors is an integer number (330782977008).

Almost surely, 2^{1323120202111} is an apocalyptic number.

1323120202111 is a deficient number, since it is larger than the sum of its proper divisors (11705921).

1323120202111 is a wasteful number, since it uses less digits than its factorization.

1323120202111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11705920.

The product of its (nonzero) digits is 144, while the sum is 19.

Adding to 1323120202111 its reverse (1112020213231), we get a palindrome (2435140415342).

The spelling of 1323120202111 in words is "one trillion, three hundred twenty-three billion, one hundred twenty million, two hundred two thousand, one hundred eleven".