21114140423 has 2 divisors, whose sum is σ = 21114140424. Its totient is φ = 21114140422.

The previous prime is 21114140401. The next prime is 21114140441. The reversal of 21114140423 is 32404141112.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 21114140423 - 2⁸ = 21114140167 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (21114140623) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10557070211 + 10557070212.

It is an arithmetic number, because the mean of its divisors is an integer number (10557070212).

Almost surely, 2^21114140423 is an apocalyptic number.

21114140423 is a deficient number, since it is larger than the sum of its proper divisors (1).

21114140423 is an equidigital number, since it uses as much as digits as its factorization.

21114140423 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 768, while the sum is 23.

Adding to 21114140423 its reverse (32404141112), we get a palindrome (53518281535).

The spelling of 21114140423 in words is "twenty-one billion, one hundred fourteen million, one hundred forty thousand, four hundred twenty-three".