21041108 has 12 divisors (see below), whose sum is σ = 40169472. Its totient is φ = 9564120.

The previous prime is 21041107. The next prime is 21041117. The reversal of 21041108 is 80114012.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21041107) 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 3 ways as a sum of consecutive naturals, for example, 239060 + ... + 239147.

It is an arithmetic number, because the mean of its divisors is an integer number (3347456).

Almost surely, 2^21041108 is an apocalyptic number.

It is an amenable number.

21041108 is a deficient number, since it is larger than the sum of its proper divisors (19128364).

21041108 is a wasteful number, since it uses less digits than its factorization.

21041108 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 478222 (or 478220 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 17.

The square root of 21041108 is about 4587.0587526213. The cubic root of 21041108 is about 276.0723222920.

The spelling of 21041108 in words is "twenty-one million, forty-one thousand, one hundred eight".