222101010121 has 2 divisors, whose sum is σ = 222101010122. Its totient is φ = 222101010120.

The previous prime is 222101010119. The next prime is 222101010139. The reversal of 222101010121 is 121010101222.

222101010121 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 190846659600 + 31254350521 = 436860^2 + 176789^2 .

It is a cyclic number.

It is not a de Polignac number, because 222101010121 - 2¹ = 222101010119 is a prime.

Together with 222101010119, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (222101010101) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 111050505060 + 111050505061.

It is an arithmetic number, because the mean of its divisors is an integer number (111050505061).

Almost surely, 2^222101010121 is an apocalyptic number.

It is an amenable number.

222101010121 is a deficient number, since it is larger than the sum of its proper divisors (1).

222101010121 is an equidigital number, since it uses as much as digits as its factorization.

222101010121 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 222101010121 its reverse (121010101222), we get a palindrome (343111111343).

The spelling of 222101010121 in words is "two hundred twenty-two billion, one hundred one million, ten thousand, one hundred twenty-one".