21110201220127 has 2 divisors, whose sum is σ = 21110201220128. Its totient is φ = 21110201220126.

The previous prime is 21110201220049. The next prime is 21110201220139. The reversal of 21110201220127 is 72102210201112.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 21110201220127 - 2¹⁹ = 21110200695839 is a prime.

It is a super-2 number, since 2×21110201220127² (a number of 27 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 21110201220098 and 21110201220107.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (21110201220187) 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, 10555100610063 + 10555100610064.

It is an arithmetic number, because the mean of its divisors is an integer number (10555100610064).

Almost surely, 2^{21110201220127} is an apocalyptic number.

21110201220127 is a deficient number, since it is larger than the sum of its proper divisors (1).

21110201220127 is an equidigital number, since it uses as much as digits as its factorization.

21110201220127 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 22.

Adding to 21110201220127 its reverse (72102210201112), we get a palindrome (93212411421239).

The spelling of 21110201220127 in words is "twenty-one trillion, one hundred ten billion, two hundred one million, two hundred twenty thousand, one hundred twenty-seven".