12121100110201 has 4 divisors (see below), whose sum is σ = 12759052747600. Its totient is φ = 11483147472804.

The previous prime is 12121100110183. The next prime is 12121100110271. The reversal of 12121100110201 is 10201100112121.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 12121100110201 - 2⁹ = 12121100109689 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12121100110271) 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 in 3 ways as a sum of consecutive naturals, for example, 318976318671 + ... + 318976318708.

It is an arithmetic number, because the mean of its divisors is an integer number (3189763186900).

Almost surely, 2^{12121100110201} is an apocalyptic number.

It is an amenable number.

12121100110201 is a deficient number, since it is larger than the sum of its proper divisors (637952637399).

12121100110201 is an equidigital number, since it uses as much as digits as its factorization.

12121100110201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 637952637398.

The product of its (nonzero) digits is 8, while the sum is 13.

Adding to 12121100110201 its reverse (10201100112121), we get a palindrome (22322200222322).

The spelling of 12121100110201 in words is "twelve trillion, one hundred twenty-one billion, one hundred million, one hundred ten thousand, two hundred one".