21195033 has 8 divisors (see below), whose sum is σ = 28404288. Its totient is φ = 14057904.

The previous prime is 21195023. The next prime is 21195037. The reversal of 21195033 is 33059112.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 21195033 - 2⁴ = 21195017 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 21194994 and 21195012.

It is not an unprimeable number, because it can be changed into a prime (21195037) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17341 + ... + 18522.

It is an arithmetic number, because the mean of its divisors is an integer number (3550536).

Almost surely, 2^21195033 is an apocalyptic number.

It is an amenable number.

21195033 is a deficient number, since it is larger than the sum of its proper divisors (7209255).

21195033 is a wasteful number, since it uses less digits than its factorization.

21195033 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36063.

The product of its (nonzero) digits is 810, while the sum is 24.

The square root of 21195033 is about 4603.8063599591. The cubic root of 21195033 is about 276.7438843513.

The spelling of 21195033 in words is "twenty-one million, one hundred ninety-five thousand, thirty-three".