12122201121211 has 2 divisors, whose sum is σ = 12122201121212. Its totient is φ = 12122201121210.

The previous prime is 12122201121193. The next prime is 12122201121229. The reversal of 12122201121211 is 11212110222121.

It is a happy number.

It is a balanced prime because it is at equal distance from previous prime (12122201121193) and next prime (12122201121229).

It is a cyclic number.

It is not a de Polignac number, because 12122201121211 - 2¹⁵ = 12122201088443 is a prime.

It is not a weakly prime, because it can be changed into another prime (12122201125211) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6061100560605 + 6061100560606.

It is an arithmetic number, because the mean of its divisors is an integer number (6061100560606).

Almost surely, 2^{12122201121211} is an apocalyptic number.

12122201121211 is a deficient number, since it is larger than the sum of its proper divisors (1).

12122201121211 is an equidigital number, since it uses as much as digits as its factorization.

12122201121211 is an evil number, because the sum of its binary digits is even.

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

Adding to 12122201121211 its reverse (11212110222121), we get a palindrome (23334311343332).

The spelling of 12122201121211 in words is "twelve trillion, one hundred twenty-two billion, two hundred one million, one hundred twenty-one thousand, two hundred eleven".