12021232311001 has 2 divisors, whose sum is σ = 12021232311002. Its totient is φ = 12021232311000.

The previous prime is 12021232310959. The next prime is 12021232311061. The reversal of 12021232311001 is 10011323212021.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 11071085000976 + 950147310025 = 3327324^2 + 974755^2 .

It is a cyclic number.

It is not a de Polignac number, because 12021232311001 - 2²¹ = 12021230213849 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 12021232311001.

It is not a weakly prime, because it can be changed into another prime (12021232311061) 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, 6010616155500 + 6010616155501.

It is an arithmetic number, because the mean of its divisors is an integer number (6010616155501).

Almost surely, 2^{12021232311001} is an apocalyptic number.

It is an amenable number.

12021232311001 is a deficient number, since it is larger than the sum of its proper divisors (1).

12021232311001 is an equidigital number, since it uses as much as digits as its factorization.

12021232311001 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 12021232311001 its reverse (10011323212021), we get a palindrome (22032555523022).

The spelling of 12021232311001 in words is "twelve trillion, twenty-one billion, two hundred thirty-two million, three hundred eleven thousand, one".