21114043 has 2 divisors, whose sum is σ = 21114044. Its totient is φ = 21114042.

The previous prime is 21114031. The next prime is 21114047. The reversal of 21114043 is 34041112.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 21114043 - 2⁵ = 21114011 is a prime.

It is not a weakly prime, because it can be changed into another prime (21114047) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10557021 + 10557022.

It is an arithmetic number, because the mean of its divisors is an integer number (10557022).

Almost surely, 2^21114043 is an apocalyptic number.

21114043 is a deficient number, since it is larger than the sum of its proper divisors (1).

21114043 is an equidigital number, since it uses as much as digits as its factorization.

21114043 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 96, while the sum is 16.

The square root of 21114043 is about 4595.0019586503. The cubic root of 21114043 is about 276.3909385047.

Adding to 21114043 its reverse (34041112), we get a palindrome (55155155).

The spelling of 21114043 in words is "twenty-one million, one hundred fourteen thousand, forty-three".