1323120211 has 4 divisors (see below), whose sum is σ = 1512137392. Its totient is φ = 1134103032.

The previous prime is 1323120199. The next prime is 1323120223. The reversal of 1323120211 is 1120213231.

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 (1323120199) and next prime (1323120223).

It is a cyclic number.

It is not a de Polignac number, because 1323120211 - 2²⁵ = 1289565779 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1323120611) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 94508580 + ... + 94508593.

It is an arithmetic number, because the mean of its divisors is an integer number (378034348).

Almost surely, 2^1323120211 is an apocalyptic number.

1323120211 is a deficient number, since it is larger than the sum of its proper divisors (189017181).

1323120211 is an equidigital number, since it uses as much as digits as its factorization.

1323120211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 189017180.

The product of its (nonzero) digits is 72, while the sum is 16.

The square root of 1323120211 is about 36374.7193941067. The cubic root of 1323120211 is about 1097.8249613422.

Adding to 1323120211 its reverse (1120213231), we get a palindrome (2443333442).

The spelling of 1323120211 in words is "one billion, three hundred twenty-three million, one hundred twenty thousand, two hundred eleven".