21079333 has 16 divisors (see below), whose sum is σ = 23592960. Its totient is φ = 18673200.

The previous prime is 21079327. The next prime is 21079363. The reversal of 21079333 is 33397012.

It is a cyclic number.

It is not a de Polignac number, because 21079333 - 2¹⁷ = 20948261 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21079313) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 110268 + ... + 110458.

It is an arithmetic number, because the mean of its divisors is an integer number (1474560).

Almost surely, 2^21079333 is an apocalyptic number.

It is an amenable number.

21079333 is a deficient number, since it is larger than the sum of its proper divisors (2513627).

21079333 is a wasteful number, since it uses less digits than its factorization.

21079333 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 408.

The product of its (nonzero) digits is 3402, while the sum is 28.

The square root of 21079333 is about 4591.2234752841. The cubic root of 21079333 is about 276.2393996874.

It can be divided in two parts, 21079 and 333, that added together give a palindrome (21412).

The spelling of 21079333 in words is "twenty-one million, seventy-nine thousand, three hundred thirty-three".