21210110022107 has 2 divisors, whose sum is σ = 21210110022108. Its totient is φ = 21210110022106.

The previous prime is 21210110022077. The next prime is 21210110022151. The reversal of 21210110022107 is 70122001101212.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 21210110022107 - 2²⁰ = 21210108973531 is a prime.

It is not a weakly prime, because it can be changed into another prime (21210110022707) 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 as a sum of consecutive naturals, namely, 10605055011053 + 10605055011054.

It is an arithmetic number, because the mean of its divisors is an integer number (10605055011054).

Almost surely, 2^{21210110022107} is an apocalyptic number.

21210110022107 is a deficient number, since it is larger than the sum of its proper divisors (1).

21210110022107 is an equidigital number, since it uses as much as digits as its factorization.

21210110022107 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 112, while the sum is 20.

Adding to 21210110022107 its reverse (70122001101212), we get a palindrome (91332111123319).

The spelling of 21210110022107 in words is "twenty-one trillion, two hundred ten billion, one hundred ten million, twenty-two thousand, one hundred seven".