12001121203231 has 2 divisors, whose sum is σ = 12001121203232. Its totient is φ = 12001121203230.

The previous prime is 12001121203157. The next prime is 12001121203243. The reversal of 12001121203231 is 13230212110021.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 12001121203231 - 2²³ = 12001112814623 is a prime.

It is a super-2 number, since 2×12001121203231² (a number of 27 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 12001121203199 and 12001121203208.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12001121003231) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6000560601615 + 6000560601616.

It is an arithmetic number, because the mean of its divisors is an integer number (6000560601616).

Almost surely, 2^{12001121203231} is an apocalyptic number.

12001121203231 is a deficient number, since it is larger than the sum of its proper divisors (1).

12001121203231 is an equidigital number, since it uses as much as digits as its factorization.

12001121203231 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 144, while the sum is 19.

Adding to 12001121203231 its reverse (13230212110021), we get a palindrome (25231333313252).

The spelling of 12001121203231 in words is "twelve trillion, one billion, one hundred twenty-one million, two hundred three thousand, two hundred thirty-one".