21114241 has 2 divisors, whose sum is σ = 21114242. Its totient is φ = 21114240.

The previous prime is 21114229. The next prime is 21114257. The reversal of 21114241 is 14241112.

It is a happy number.

It is an a-pointer prime, because the next prime (21114257) can be obtained adding 21114241 to its sum of digits (16).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 17098225 + 4016016 = 4135^2 + 2004^2 .

It is a cyclic number.

It is not a de Polignac number, because 21114241 - 2⁵ = 21114209 is a prime.

It is a super-2 number, since 2×21114241² = 891622346012162, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (21114211) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10557120 + 10557121.

It is an arithmetic number, because the mean of its divisors is an integer number (10557121).

Almost surely, 2^21114241 is an apocalyptic number.

It is an amenable number.

21114241 is a deficient number, since it is larger than the sum of its proper divisors (1).

21114241 is an equidigital number, since it uses as much as digits as its factorization.

21114241 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 64, while the sum is 16.

The square root of 21114241 is about 4595.0235037484. The cubic root of 21114241 is about 276.3918024674.

Adding to 21114241 its reverse (14241112), we get a palindrome (35355353).

The spelling of 21114241 in words is "twenty-one million, one hundred fourteen thousand, two hundred forty-one".