12001201021889 has 2 divisors, whose sum is σ = 12001201021890. Its totient is φ = 12001201021888.

The previous prime is 12001201021853. The next prime is 12001201021897. The reversal of 12001201021889 is 98812010210021.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 9592077963664 + 2409123058225 = 3097108^2 + 1552135^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12001201021889 is a prime.

It is not a weakly prime, because it can be changed into another prime (12001201021819) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6000600510944 + 6000600510945.

It is an arithmetic number, because the mean of its divisors is an integer number (6000600510945).

Almost surely, 2^{12001201021889} is an apocalyptic number.

It is an amenable number.

12001201021889 is a deficient number, since it is larger than the sum of its proper divisors (1).

12001201021889 is an equidigital number, since it uses as much as digits as its factorization.

12001201021889 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4608, while the sum is 35.

The spelling of 12001201021889 in words is "twelve trillion, one billion, two hundred one million, twenty-one thousand, eight hundred eighty-nine".