12013021001 has 2 divisors, whose sum is σ = 12013021002. Its totient is φ = 12013021000.

The previous prime is 12013020989. The next prime is 12013021037. The reversal of 12013021001 is 10012031021.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 6634265401 + 5378755600 = 81451^2 + 73340^2 .

It is a cyclic number.

It is not a de Polignac number, because 12013021001 - 2³⁰ = 10939279177 is a prime.

It is not a weakly prime, because it can be changed into another prime (12013021091) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6006510500 + 6006510501.

It is an arithmetic number, because the mean of its divisors is an integer number (6006510501).

Almost surely, 2^12013021001 is an apocalyptic number.

It is an amenable number.

12013021001 is a deficient number, since it is larger than the sum of its proper divisors (1).

12013021001 is an equidigital number, since it uses as much as digits as its factorization.

12013021001 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 12, while the sum is 11.

Adding to 12013021001 its reverse (10012031021), we get a palindrome (22025052022).

The spelling of 12013021001 in words is "twelve billion, thirteen million, twenty-one thousand, one".