12001201021898 has 64 divisors (see below), whose sum is σ = 19919678889600. Its totient is φ = 5377468938240.

The previous prime is 12001201021897. The next prime is 12001201022033. The reversal of 12001201021898 is 89812010210021.

It is not an unprimeable number, because it can be changed into a prime (12001201021897) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1147666286 + ... + 1147676742.

It is an arithmetic number, because the mean of its divisors is an integer number (311244982650).

Almost surely, 2^{12001201021898} is an apocalyptic number.

12001201021898 is a deficient number, since it is larger than the sum of its proper divisors (7918477867702).

12001201021898 is a wasteful number, since it uses less digits than its factorization.

12001201021898 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12935.

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

The spelling of 12001201021898 in words is "twelve trillion, one billion, two hundred one million, twenty-one thousand, eight hundred ninety-eight".