12000000121001 has 2 divisors, whose sum is σ = 12000000121002. Its totient is φ = 12000000121000.

The previous prime is 12000000120989. The next prime is 12000000121033. The reversal of 12000000121001 is 10012100000021.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 10766923127401 + 1233076993600 = 3281299^2 + 1110440^2 .

It is a cyclic number.

It is not a de Polignac number, because 12000000121001 - 2³⁴ = 11982820251817 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 12000000121001.

It is not a weakly prime, because it can be changed into another prime (12000000121061) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6000000060500 + 6000000060501.

It is an arithmetic number, because the mean of its divisors is an integer number (6000000060501).

Almost surely, 2^{12000000121001} is an apocalyptic number.

It is an amenable number.

12000000121001 is a deficient number, since it is larger than the sum of its proper divisors (1).

12000000121001 is an equidigital number, since it uses as much as digits as its factorization.

12000000121001 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4, while the sum is 8.

Adding to 12000000121001 its reverse (10012100000021), we get a palindrome (22012100121022).

The spelling of 12000000121001 in words is "twelve trillion, one hundred twenty-one thousand, one".