12001211302331 has 8 divisors (see below), whose sum is σ = 12145868409360. Its totient is φ = 11856555724032.

The previous prime is 12001211302307. The next prime is 12001211302343. The reversal of 12001211302331 is 13320311210021.

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 a de Polignac number, because none of the positive numbers 2^k-12001211302331 is a prime.

It is a super-2 number, since 2×12001211302331² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12001211302231) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 28359311 + ... + 28779383.

It is an arithmetic number, because the mean of its divisors is an integer number (1518233551170).

Almost surely, 2^{12001211302331} is an apocalyptic number.

12001211302331 is a deficient number, since it is larger than the sum of its proper divisors (144657107029).

12001211302331 is an equidigital number, since it uses as much as digits as its factorization.

12001211302331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 764365.

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

Adding to 12001211302331 its reverse (13320311210021), we get a palindrome (25321522512352).

The spelling of 12001211302331 in words is "twelve trillion, one billion, two hundred eleven million, three hundred two thousand, three hundred thirty-one".