21114513527 has 2 divisors, whose sum is σ = 21114513528. Its totient is φ = 21114513526.

The previous prime is 21114513461. The next prime is 21114513529. The reversal of 21114513527 is 72531541112.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 21114513527 - 2¹⁸ = 21114251383 is a prime.

Together with 21114513529, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 21114513493 and 21114513502.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (21114513529) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10557256763 + 10557256764.

It is an arithmetic number, because the mean of its divisors is an integer number (10557256764).

Almost surely, 2^21114513527 is an apocalyptic number.

21114513527 is a deficient number, since it is larger than the sum of its proper divisors (1).

21114513527 is an equidigital number, since it uses as much as digits as its factorization.

21114513527 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 8400, while the sum is 32.

The spelling of 21114513527 in words is "twenty-one billion, one hundred fourteen million, five hundred thirteen thousand, five hundred twenty-seven".