21073119 has 8 divisors (see below), whose sum is σ = 28436352. Its totient is φ = 13879320.

The previous prime is 21073103. The next prime is 21073127. The reversal of 21073119 is 91137012.

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

It is not a de Polignac number, because 21073119 - 2⁴ = 21073103 is a prime.

It is a super-2 number, since 2×21073119² = 888152688776322, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21073159) 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 7 ways as a sum of consecutive naturals, for example, 42067 + ... + 42564.

It is an arithmetic number, because the mean of its divisors is an integer number (3554544).

Almost surely, 2^21073119 is an apocalyptic number.

21073119 is a deficient number, since it is larger than the sum of its proper divisors (7363233).

21073119 is an equidigital number, since it uses as much as digits as its factorization.

21073119 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 84717.

The product of its (nonzero) digits is 378, while the sum is 24.

The square root of 21073119 is about 4590.5466994684. The cubic root of 21073119 is about 276.2122527132.

The spelling of 21073119 in words is "twenty-one million, seventy-three thousand, one hundred nineteen".