21114143 has 2 divisors, whose sum is σ = 21114144. Its totient is φ = 21114142.

The previous prime is 21114127. The next prime is 21114157. The reversal of 21114143 is 34141112.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 21114143 - 2⁴ = 21114127 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (21114103) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10557071 + 10557072.

It is an arithmetic number, because the mean of its divisors is an integer number (10557072).

Almost surely, 2^21114143 is an apocalyptic number.

21114143 is a deficient number, since it is larger than the sum of its proper divisors (1).

21114143 is an equidigital number, since it uses as much as digits as its factorization.

21114143 is an evil number, because the sum of its binary digits is even.

The product of its digits is 96, while the sum is 17.

The square root of 21114143 is about 4595.0128400256. The cubic root of 21114143 is about 276.3913748501.

Adding to 21114143 its reverse (34141112), we get a palindrome (55255255).

The spelling of 21114143 in words is "twenty-one million, one hundred fourteen thousand, one hundred forty-three".