1323312121211 has 8 divisors (see below), whose sum is σ = 1446352527744. Its totient is φ = 1205293772160.

The previous prime is 1323312121193. The next prime is 1323312121213. The reversal of 1323312121211 is 1121212133231.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1323312121211 - 2⁶ = 1323312121147 is a prime.

It is a super-2 number, since 2×1323312121211² (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 (1323312121213) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1255513820 + ... + 1255514873.

It is an arithmetic number, because the mean of its divisors is an integer number (180794065968).

Almost surely, 2^{1323312121211} is an apocalyptic number.

1323312121211 is a deficient number, since it is larger than the sum of its proper divisors (123040406533).

1323312121211 is a wasteful number, since it uses less digits than its factorization.

1323312121211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2511028741.

The product of its digits is 432, while the sum is 23.

Adding to 1323312121211 its reverse (1121212133231), we get a palindrome (2444524254442).

The spelling of 1323312121211 in words is "one trillion, three hundred twenty-three billion, three hundred twelve million, one hundred twenty-one thousand, two hundred eleven".