1323110121 has 32 divisors (see below), whose sum is σ = 1903219968. Its totient is φ = 815443200.

The previous prime is 1323110111. The next prime is 1323110141. The reversal of 1323110121 is 1210113231.

It is a happy number.

It is not a de Polignac number, because 1323110121 - 2⁷ = 1323109993 is a prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 1323110121.

It is not an unprimeable number, because it can be changed into a prime (1323110111) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 399171 + ... + 402471.

It is an arithmetic number, because the mean of its divisors is an integer number (59475624).

Almost surely, 2^1323110121 is an apocalyptic number.

It is an amenable number.

1323110121 is a deficient number, since it is larger than the sum of its proper divisors (580109847).

1323110121 is a wasteful number, since it uses less digits than its factorization.

1323110121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3521.

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

The square root of 1323110121 is about 36374.5806986142. The cubic root of 1323110121 is about 1097.8221706958.

Adding to 1323110121 its reverse (1210113231), we get a palindrome (2533223352).

It can be divided in two parts, 1323110 and 121, that added together give a palindrome (1323231).

The spelling of 1323110121 in words is "one billion, three hundred twenty-three million, one hundred ten thousand, one hundred twenty-one".