21033119 has 2 divisors, whose sum is σ = 21033120. Its totient is φ = 21033118.

The previous prime is 21033083. The next prime is 21033121. The reversal of 21033119 is 91133012.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 21033119 - 2⁸ = 21032863 is a prime.

It is a super-2 number, since 2×21033119² = 884784189736322, which contains 22 as substring.

Together with 21033121, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 21033119.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (21033169) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10516559 + 10516560.

It is an arithmetic number, because the mean of its divisors is an integer number (10516560).

Almost surely, 2^21033119 is an apocalyptic number.

21033119 is a deficient number, since it is larger than the sum of its proper divisors (1).

21033119 is an equidigital number, since it uses as much as digits as its factorization.

21033119 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 162, while the sum is 20.

The square root of 21033119 is about 4586.1878504920. The cubic root of 21033119 is about 276.0373776656.

The spelling of 21033119 in words is "twenty-one million, thirty-three thousand, one hundred nineteen".