21010222127 has 2 divisors, whose sum is σ = 21010222128. Its totient is φ = 21010222126.

The previous prime is 21010222087. The next prime is 21010222153. The reversal of 21010222127 is 72122201012.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 21010222127 - 2⁶ = 21010222063 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 21010222099 and 21010222108.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (21010222187) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10505111063 + 10505111064.

It is an arithmetic number, because the mean of its divisors is an integer number (10505111064).

Almost surely, 2^21010222127 is an apocalyptic number.

21010222127 is a deficient number, since it is larger than the sum of its proper divisors (1).

21010222127 is an equidigital number, since it uses as much as digits as its factorization.

21010222127 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 224, while the sum is 20.

Adding to 21010222127 its reverse (72122201012), we get a palindrome (93132423139).

The spelling of 21010222127 in words is "twenty-one billion, ten million, two hundred twenty-two thousand, one hundred twenty-seven".