21124113523367 has 2 divisors, whose sum is σ = 21124113523368. Its totient is φ = 21124113523366.

The previous prime is 21124113523319. The next prime is 21124113523369. The reversal of 21124113523367 is 76332531142112.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 21124113523367 - 2²⁸ = 21123845087911 is a prime.

Together with 21124113523369, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (21124113523369) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10562056761683 + 10562056761684.

It is an arithmetic number, because the mean of its divisors is an integer number (10562056761684).

Almost surely, 2^{21124113523367} is an apocalyptic number.

21124113523367 is a deficient number, since it is larger than the sum of its proper divisors (1).

21124113523367 is an equidigital number, since it uses as much as digits as its factorization.

21124113523367 is an evil number, because the sum of its binary digits is even.

The product of its digits is 181440, while the sum is 41.

Adding to 21124113523367 its reverse (76332531142112), we get a palindrome (97456644665479).

The spelling of 21124113523367 in words is "twenty-one trillion, one hundred twenty-four billion, one hundred thirteen million, five hundred twenty-three thousand, three hundred sixty-seven".