21482011 has 8 divisors (see below), whose sum is σ = 22389120. Its totient is φ = 20586048.

The previous prime is 21481963. The next prime is 21482029. The reversal of 21482011 is 11028412.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 21482011 - 2⁷ = 21481883 is a prime.

It is a super-2 number, since 2×21482011² = 922953593208242, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 21482011.

It is not an unprimeable number, because it can be changed into a prime (21482051) 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, 1270 + ... + 6676.

It is an arithmetic number, because the mean of its divisors is an integer number (2798640).

Almost surely, 2^21482011 is an apocalyptic number.

21482011 is a deficient number, since it is larger than the sum of its proper divisors (907109).

21482011 is a wasteful number, since it uses less digits than its factorization.

21482011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5573.

The product of its (nonzero) digits is 128, while the sum is 19.

The square root of 21482011 is about 4634.8690380635. The cubic root of 21482011 is about 277.9873146050.

The spelling of 21482011 in words is "twenty-one million, four hundred eighty-two thousand, eleven".