12001231103021 has 2 divisors, whose sum is σ = 12001231103022. Its totient is φ = 12001231103020.

The previous prime is 12001231103011. The next prime is 12001231103041. The reversal of 12001231103021 is 12030113210021.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 7481652738121 + 4519578364900 = 2735261^2 + 2125930^2 .

It is a cyclic number.

It is not a de Polignac number, because 12001231103021 - 2²² = 12001226908717 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12001231103011) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6000615551510 + 6000615551511.

It is an arithmetic number, because the mean of its divisors is an integer number (6000615551511).

Almost surely, 2^{12001231103021} is an apocalyptic number.

It is an amenable number.

12001231103021 is a deficient number, since it is larger than the sum of its proper divisors (1).

12001231103021 is an equidigital number, since it uses as much as digits as its factorization.

12001231103021 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 72, while the sum is 17.

Adding to 12001231103021 its reverse (12030113210021), we get a palindrome (24031344313042).

The spelling of 12001231103021 in words is "twelve trillion, one billion, two hundred thirty-one million, one hundred three thousand, twenty-one".