21023011127 has 2 divisors, whose sum is σ = 21023011128. Its totient is φ = 21023011126.

The previous prime is 21023011043. The next prime is 21023011133. The reversal of 21023011127 is 72111032012.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 21023011127 - 2²⁰ = 21021962551 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 21023011099 and 21023011108.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (21023011027) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10511505563 + 10511505564.

It is an arithmetic number, because the mean of its divisors is an integer number (10511505564).

Almost surely, 2^21023011127 is an apocalyptic number.

21023011127 is a deficient number, since it is larger than the sum of its proper divisors (1).

21023011127 is an equidigital number, since it uses as much as digits as its factorization.

21023011127 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 168, while the sum is 20.

Adding to 21023011127 its reverse (72111032012), we get a palindrome (93134043139).

The spelling of 21023011127 in words is "twenty-one billion, twenty-three million, eleven thousand, one hundred twenty-seven".