21333119 has 4 divisors (see below), whose sum is σ = 21544440. Its totient is φ = 21121800.

The previous prime is 21333107. The next prime is 21333133. The reversal of 21333119 is 91133312.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 21333119 - 2¹⁶ = 21267583 is a prime.

It is a super-2 number, since 2×21333119² = 910203932536322, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 21333094 and 21333103.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21333139) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 105509 + ... + 105710.

It is an arithmetic number, because the mean of its divisors is an integer number (5386110).

Almost surely, 2^21333119 is an apocalyptic number.

21333119 is a deficient number, since it is larger than the sum of its proper divisors (211321).

21333119 is a wasteful number, since it uses less digits than its factorization.

21333119 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 211320.

The product of its digits is 486, while the sum is 23.

The square root of 21333119 is about 4618.7789511948. The cubic root of 21333119 is about 277.3435809219.

The spelling of 21333119 in words is "twenty-one million, three hundred thirty-three thousand, one hundred nineteen".