12122221111201 has 4 divisors (see below), whose sum is σ = 12126301296304. Its totient is φ = 12118140926100.

The previous prime is 12122221111199. The next prime is 12122221111219. The reversal of 12122221111201 is 10211112222121.

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 12122221111201 - 2¹ = 12122221111199 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12122221111261) 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, 2040088095 + ... + 2040094036.

It is an arithmetic number, because the mean of its divisors is an integer number (3031575324076).

Almost surely, 2^{12122221111201} is an apocalyptic number.

It is an amenable number.

12122221111201 is a deficient number, since it is larger than the sum of its proper divisors (4080185103).

12122221111201 is an equidigital number, since it uses as much as digits as its factorization.

12122221111201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4080185102.

The product of its (nonzero) digits is 64, while the sum is 19.

Adding to 12122221111201 its reverse (10211112222121), we get a palindrome (22333333333322).

The spelling of 12122221111201 in words is "twelve trillion, one hundred twenty-two billion, two hundred twenty-one million, one hundred eleven thousand, two hundred one".