21100120033127 has 2 divisors, whose sum is σ = 21100120033128. Its totient is φ = 21100120033126.

The previous prime is 21100120033093. The next prime is 21100120033169. The reversal of 21100120033127 is 72133002100112.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 21100120033127 - 2³² = 21095825065831 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (21100120023127) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10550060016563 + 10550060016564.

It is an arithmetic number, because the mean of its divisors is an integer number (10550060016564).

Almost surely, 2^{21100120033127} is an apocalyptic number.

21100120033127 is a deficient number, since it is larger than the sum of its proper divisors (1).

21100120033127 is an equidigital number, since it uses as much as digits as its factorization.

21100120033127 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 504, while the sum is 23.

Adding to 21100120033127 its reverse (72133002100112), we get a palindrome (93233122133239).

The spelling of 21100120033127 in words is "twenty-one trillion, one hundred billion, one hundred twenty million, thirty-three thousand, one hundred twenty-seven".