110012012221 has 2 divisors, whose sum is σ = 110012012222. Its totient is φ = 110012012220.

The previous prime is 110012012219. The next prime is 110012012237. The reversal of 110012012221 is 122210210011.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 57474788121 + 52537224100 = 239739^2 + 229210^2 .

It is a cyclic number.

It is not a de Polignac number, because 110012012221 - 2¹ = 110012012219 is a prime.

Together with 110012012219, 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 (110012012281) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55006006110 + 55006006111.

It is an arithmetic number, because the mean of its divisors is an integer number (55006006111).

Almost surely, 2^110012012221 is an apocalyptic number.

It is an amenable number.

110012012221 is a deficient number, since it is larger than the sum of its proper divisors (1).

110012012221 is an equidigital number, since it uses as much as digits as its factorization.

110012012221 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 110012012221 its reverse (122210210011), we get a palindrome (232222222232).

The spelling of 110012012221 in words is "one hundred ten billion, twelve million, twelve thousand, two hundred twenty-one".