12121222011201 has 8 divisors (see below), whose sum is σ = 17957365942560. Its totient is φ = 8080814674116.

The previous prime is 12121222011193. The next prime is 12121222011307. The reversal of 12121222011201 is 10211022212121.

12121222011201 is a `hidden beast` number, since 1 + 21 + 212 + 220 + 11 + 201 = 666.

It is not a de Polignac number, because 12121222011201 - 2³ = 12121222011193 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (12121222011901) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 224467074255 + ... + 224467074308.

It is an arithmetic number, because the mean of its divisors is an integer number (2244670742820).

Almost surely, 2^{12121222011201} is an apocalyptic number.

It is an amenable number.

12121222011201 is a deficient number, since it is larger than the sum of its proper divisors (5836143931359).

12121222011201 is an equidigital number, since it uses as much as digits as its factorization.

12121222011201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 448934148572 (or 448934148566 counting only the distinct ones).

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

Adding to 12121222011201 its reverse (10211022212121), we get a palindrome (22332244223322).

The spelling of 12121222011201 in words is "twelve trillion, one hundred twenty-one billion, two hundred twenty-two million, eleven thousand, two hundred one".