1323001121 has 12 divisors (see below), whose sum is σ = 1446801660. Its totient is φ = 1209124800.

The previous prime is 1323001093. The next prime is 1323001129. The reversal of 1323001121 is 1211003231.

It can be written as a sum of positive squares in 6 ways, for example, as 75498721 + 1247502400 = 8689^2 + 35320^2 .

It is a de Polignac number, because none of the positive numbers 2^k-1323001121 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 1323001096 and 1323001105.

It is not an unprimeable number, because it can be changed into a prime (1323001129) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 21686 + ... + 55823.

It is an arithmetic number, because the mean of its divisors is an integer number (120566805).

Almost surely, 2^1323001121 is an apocalyptic number.

It is an amenable number.

1323001121 is a deficient number, since it is larger than the sum of its proper divisors (123800539).

1323001121 is a wasteful number, since it uses less digits than its factorization.

1323001121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 77636 (or 77623 counting only the distinct ones).

The product of its (nonzero) digits is 36, while the sum is 14.

The square root of 1323001121 is about 36373.0823686968. The cubic root of 1323001121 is about 1097.7920230659.

Adding to 1323001121 its reverse (1211003231), we get a palindrome (2534004352).

The spelling of 1323001121 in words is "one billion, three hundred twenty-three million, one thousand, one hundred twenty-one".