12221101212211 has 2 divisors, whose sum is σ = 12221101212212. Its totient is φ = 12221101212210.

The previous prime is 12221101212167. The next prime is 12221101212233. The reversal of 12221101212211 is 11221210112221.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 12221101212211 - 2¹¹ = 12221101210163 is a prime.

It is not a weakly prime, because it can be changed into another prime (12221101212241) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6110550606105 + 6110550606106.

It is an arithmetic number, because the mean of its divisors is an integer number (6110550606106).

Almost surely, 2^{12221101212211} is an apocalyptic number.

12221101212211 is a deficient number, since it is larger than the sum of its proper divisors (1).

12221101212211 is an equidigital number, since it uses as much as digits as its factorization.

12221101212211 is an odious number, because the sum of its binary digits is odd.

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

Adding to 12221101212211 its reverse (11221210112221), we get a palindrome (23442311324432).

It can be divided in two parts, 1222110 and 1212211, that added together give a triangular number (2434321 = T₂₂₀₆).

The spelling of 12221101212211 in words is "twelve trillion, two hundred twenty-one billion, one hundred one million, two hundred twelve thousand, two hundred eleven".