1323201111 has 4 divisors (see below), whose sum is σ = 1764268152. Its totient is φ = 882134072.

The previous prime is 1323201091. The next prime is 1323201119. The reversal of 1323201111 is 1111023231.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1111023231 = 3 ⋅370341077.

It is a cyclic number.

It is not a de Polignac number, because 1323201111 - 2¹⁴ = 1323184727 is a prime.

It is a super-2 number, since 2×1323201111² = 3501722360303268642, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1323201119) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 220533516 + ... + 220533521.

It is an arithmetic number, because the mean of its divisors is an integer number (441067038).

Almost surely, 2^1323201111 is an apocalyptic number.

1323201111 is a deficient number, since it is larger than the sum of its proper divisors (441067041).

1323201111 is an equidigital number, since it uses as much as digits as its factorization.

1323201111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 441067040.

The product of its (nonzero) digits is 36, while the sum is 15.

The square root of 1323201111 is about 36375.8314131787. The cubic root of 1323201111 is about 1097.8473357842.

Adding to 1323201111 its reverse (1111023231), we get a palindrome (2434224342).

The spelling of 1323201111 in words is "one billion, three hundred twenty-three million, two hundred one thousand, one hundred eleven".