21110032127 has 2 divisors, whose sum is σ = 21110032128. Its totient is φ = 21110032126.

The previous prime is 21110032121. The next prime is 21110032157. The reversal of 21110032127 is 72123001112.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 21110032127 - 2²⁰ = 21108983551 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 21110032099 and 21110032108.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (21110032121) 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, 10555016063 + 10555016064.

It is an arithmetic number, because the mean of its divisors is an integer number (10555016064).

Almost surely, 2^21110032127 is an apocalyptic number.

21110032127 is a deficient number, since it is larger than the sum of its proper divisors (1).

21110032127 is an equidigital number, since it uses as much as digits as its factorization.

21110032127 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 168, while the sum is 20.

Adding to 21110032127 its reverse (72123001112), we get a palindrome (93233033239).

The spelling of 21110032127 in words is "twenty-one billion, one hundred ten million, thirty-two thousand, one hundred twenty-seven".