21244119 has 8 divisors (see below), whose sum is σ = 30504432. Its totient is φ = 13073280.

The previous prime is 21244073. The next prime is 21244121. The reversal of 21244119 is 91144212.

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

It is not a de Polignac number, because 21244119 - 2²⁰ = 20195543 is a prime.

It is a super-2 number, since 2×21244119² = 902625184172322, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21244199) 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, 272322 + ... + 272399.

It is an arithmetic number, because the mean of its divisors is an integer number (3813054).

Almost surely, 2^21244119 is an apocalyptic number.

21244119 is a deficient number, since it is larger than the sum of its proper divisors (9260313).

21244119 is a wasteful number, since it uses less digits than its factorization.

21244119 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 544737.

The product of its digits is 576, while the sum is 24.

The square root of 21244119 is about 4609.1343004951. The cubic root of 21244119 is about 276.9573585349.

The spelling of 21244119 in words is "twenty-one million, two hundred forty-four thousand, one hundred nineteen".