21112244221127 has 2 divisors, whose sum is σ = 21112244221128. Its totient is φ = 21112244221126.

The previous prime is 21112244221087. The next prime is 21112244221157. The reversal of 21112244221127 is 72112244221112.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 21112244221127 - 2¹⁰ = 21112244220103 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 21112244221093 and 21112244221102.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (21112244221157) 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, 10556122110563 + 10556122110564.

It is an arithmetic number, because the mean of its divisors is an integer number (10556122110564).

Almost surely, 2^{21112244221127} is an apocalyptic number.

21112244221127 is a deficient number, since it is larger than the sum of its proper divisors (1).

21112244221127 is an equidigital number, since it uses as much as digits as its factorization.

21112244221127 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 7168, while the sum is 32.

Adding to 21112244221127 its reverse (72112244221112), we get a palindrome (93224488442239).

The spelling of 21112244221127 in words is "twenty-one trillion, one hundred twelve billion, two hundred forty-four million, two hundred twenty-one thousand, one hundred twenty-seven".