12121012221201 has 16 divisors (see below), whose sum is σ = 19338367077120. Its totient is φ = 7459084443600.

The previous prime is 12121012221167. The next prime is 12121012221239. The reversal of 12121012221201 is 10212221012121.

12121012221201 is a `hidden beast` number, since 1 + 21 + 210 + 12 + 221 + 201 = 666.

It is not a de Polignac number, because 12121012221201 - 2⁹ = 12121012220689 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12121012221271) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 17266398825 + ... + 17266399526.

It is an arithmetic number, because the mean of its divisors is an integer number (1208647942320).

Almost surely, 2^{12121012221201} is an apocalyptic number.

It is an amenable number.

12121012221201 is a deficient number, since it is larger than the sum of its proper divisors (7217354855919).

12121012221201 is a wasteful number, since it uses less digits than its factorization.

12121012221201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34532798373 (or 34532798367 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 18.

Adding to 12121012221201 its reverse (10212221012121), we get a palindrome (22333233233322).

The spelling of 12121012221201 in words is "twelve trillion, one hundred twenty-one billion, twelve million, two hundred twenty-one thousand, two hundred one".