21341033 has 32 divisors (see below), whose sum is σ = 26998272. Its totient is φ = 16473600.

The previous prime is 21341017. The next prime is 21341053. The reversal of 21341033 is 33014312.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 21341033 - 2⁴ = 21341017 is a prime.

It is not an unprimeable number, because it can be changed into a prime (21341053) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 349823 + ... + 349883.

It is an arithmetic number, because the mean of its divisors is an integer number (843696).

Almost surely, 2^21341033 is an apocalyptic number.

21341033 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

It is an amenable number.

21341033 is a deficient number, since it is larger than the sum of its proper divisors (5657239).

21341033 is a wasteful number, since it uses less digits than its factorization.

21341033 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 185.

The product of its (nonzero) digits is 216, while the sum is 17.

The square root of 21341033 is about 4619.6355916890. The cubic root of 21341033 is about 277.3778722936.

Adding to 21341033 its reverse (33014312), we get a palindrome (54355345).

The spelling of 21341033 in words is "twenty-one million, three hundred forty-one thousand, thirty-three".