12110101205221 has 2 divisors, whose sum is σ = 12110101205222. Its totient is φ = 12110101205220.

The previous prime is 12110101205219. The next prime is 12110101205243. The reversal of 12110101205221 is 12250210101121.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 12062354148100 + 47747057121 = 3473090^2 + 218511^2 .

It is a cyclic number.

It is not a de Polignac number, because 12110101205221 - 2¹ = 12110101205219 is a prime.

Together with 12110101205219, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12110101206221) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6055050602610 + 6055050602611.

It is an arithmetic number, because the mean of its divisors is an integer number (6055050602611).

Almost surely, 2^{12110101205221} is an apocalyptic number.

It is an amenable number.

12110101205221 is a deficient number, since it is larger than the sum of its proper divisors (1).

12110101205221 is an equidigital number, since it uses as much as digits as its factorization.

12110101205221 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 80, while the sum is 19.

Adding to 12110101205221 its reverse (12250210101121), we get a palindrome (24360311306342).

The spelling of 12110101205221 in words is "twelve trillion, one hundred ten billion, one hundred one million, two hundred five thousand, two hundred twenty-one".