21410133 has 4 divisors (see below), whose sum is σ = 28546848. Its totient is φ = 14273420.

The previous prime is 21410117. The next prime is 21410141. The reversal of 21410133 is 33101412.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 21410133 - 2⁴ = 21410117 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21410113) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3568353 + ... + 3568358.

It is an arithmetic number, because the mean of its divisors is an integer number (7136712).

Almost surely, 2^21410133 is an apocalyptic number.

It is an amenable number.

21410133 is a deficient number, since it is larger than the sum of its proper divisors (7136715).

21410133 is an equidigital number, since it uses as much as digits as its factorization.

21410133 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7136714.

The product of its (nonzero) digits is 72, while the sum is 15.

The square root of 21410133 is about 4627.1084923524. The cubic root of 21410133 is about 277.6769231316.

Adding to 21410133 its reverse (33101412), we get a palindrome (54511545).

The spelling of 21410133 in words is "twenty-one million, four hundred ten thousand, one hundred thirty-three".