21114320023 has 2 divisors, whose sum is σ = 21114320024. Its totient is φ = 21114320022.

The previous prime is 21114320021. The next prime is 21114320027. The reversal of 21114320023 is 32002341112.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 21114320023 - 2¹ = 21114320021 is a prime.

Together with 21114320021, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (21114320021) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10557160011 + 10557160012.

It is an arithmetic number, because the mean of its divisors is an integer number (10557160012).

Almost surely, 2^21114320023 is an apocalyptic number.

21114320023 is a deficient number, since it is larger than the sum of its proper divisors (1).

21114320023 is an equidigital number, since it uses as much as digits as its factorization.

21114320023 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 288, while the sum is 19.

Adding to 21114320023 its reverse (32002341112), we get a palindrome (53116661135).

The spelling of 21114320023 in words is "twenty-one billion, one hundred fourteen million, three hundred twenty thousand, twenty-three".