1323001312211 has 4 divisors (see below), whose sum is σ = 1353768784632. Its totient is φ = 1292233839792.

The previous prime is 1323001312141. The next prime is 1323001312219. The reversal of 1323001312211 is 1122131003231.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 1323001312211 - 2²⁶ = 1322934203347 is a prime.

It is a super-2 number, since 2×1323001312211² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1323001312219) 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, 15383736146 + ... + 15383736231.

It is an arithmetic number, because the mean of its divisors is an integer number (338442196158).

Almost surely, 2^{1323001312211} is an apocalyptic number.

1323001312211 is a deficient number, since it is larger than the sum of its proper divisors (30767472421).

1323001312211 is an equidigital number, since it uses as much as digits as its factorization.

1323001312211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30767472420.

The product of its (nonzero) digits is 216, while the sum is 20.

Adding to 1323001312211 its reverse (1122131003231), we get a palindrome (2445132315442).

The spelling of 1323001312211 in words is "one trillion, three hundred twenty-three billion, one million, three hundred twelve thousand, two hundred eleven".