21000112002127 has 2 divisors, whose sum is σ = 21000112002128. Its totient is φ = 21000112002126.

The previous prime is 21000112002113. The next prime is 21000112002131. The reversal of 21000112002127 is 72120021100012.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 21000112002127 - 2¹⁵ = 21000111969359 is a prime.

It is a super-3 number, since 3×21000112002127³ (a number of 41 digits) contains 333 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (21000112002227) 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, 10500056001063 + 10500056001064.

It is an arithmetic number, because the mean of its divisors is an integer number (10500056001064).

Almost surely, 2^{21000112002127} is an apocalyptic number.

21000112002127 is a deficient number, since it is larger than the sum of its proper divisors (1).

21000112002127 is an equidigital number, since it uses as much as digits as its factorization.

21000112002127 is an odious number, because the sum of its binary digits is odd.

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

Adding to 21000112002127 its reverse (72120021100012), we get a palindrome (93120133102139).

The spelling of 21000112002127 in words is "twenty-one trillion, one hundred twelve million, two thousand, one hundred twenty-seven".