21041002982 has 8 divisors (see below), whose sum is σ = 31562655696. Its totient is φ = 10520117752.

The previous prime is 21041002979. The next prime is 21041002987. The reversal of 21041002982 is 28920014012.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21041002987) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 117578 + ... + 236445.

It is an arithmetic number, because the mean of its divisors is an integer number (3945331962).

Almost surely, 2^21041002982 is an apocalyptic number.

21041002982 is a deficient number, since it is larger than the sum of its proper divisors (10521652714).

21041002982 is a wasteful number, since it uses less digits than its factorization.

21041002982 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 383742.

The product of its (nonzero) digits is 2304, while the sum is 29.

Adding to 21041002982 its reverse (28920014012), we get a palindrome (49961016994).

The spelling of 21041002982 in words is "twenty-one billion, forty-one million, two thousand, nine hundred eighty-two".