12122121222201 has 4 divisors (see below), whose sum is σ = 16162828296272. Its totient is φ = 8081414148132.

The previous prime is 12122121222173. The next prime is 12122121222203. The reversal of 12122121222201 is 10222212122121.

12122121222201 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 not a de Polignac number, because 12122121222201 - 2⁶ = 12122121222137 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (12122121222203) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2020353537031 + ... + 2020353537036.

It is an arithmetic number, because the mean of its divisors is an integer number (4040707074068).

Almost surely, 2^{12122121222201} is an apocalyptic number.

It is an amenable number.

12122121222201 is a deficient number, since it is larger than the sum of its proper divisors (4040707074071).

12122121222201 is an equidigital number, since it uses as much as digits as its factorization.

12122121222201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4040707074070.

The product of its (nonzero) digits is 256, while the sum is 21.

Adding to 12122121222201 its reverse (10222212122121), we get a palindrome (22344333344322).

The spelling of 12122121222201 in words is "twelve trillion, one hundred twenty-two billion, one hundred twenty-one million, two hundred twenty-two thousand, two hundred one".