21110002020127 has 2 divisors, whose sum is σ = 21110002020128. Its totient is φ = 21110002020126.

The previous prime is 21110002020083. The next prime is 21110002020181. The reversal of 21110002020127 is 72102020001112.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 21110002020127 - 2²⁷ = 21109867802399 is a prime.

It is a super-2 number, since 2×21110002020127² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (21110002020197) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10555001010063 + 10555001010064.

It is an arithmetic number, because the mean of its divisors is an integer number (10555001010064).

Almost surely, 2^{21110002020127} is an apocalyptic number.

21110002020127 is a deficient number, since it is larger than the sum of its proper divisors (1).

21110002020127 is an equidigital number, since it uses as much as digits as its factorization.

21110002020127 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 112, while the sum is 19.

Adding to 21110002020127 its reverse (72102020001112), we get a palindrome (93212022021239).

The spelling of 21110002020127 in words is "twenty-one trillion, one hundred ten billion, two million, twenty thousand, one hundred twenty-seven".