21004410022 has 8 divisors (see below), whose sum is σ = 31508237376. Its totient is φ = 10501664232.

The previous prime is 21004410013. The next prime is 21004410041. The reversal of 21004410022 is 22001440012.

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

It is a junction number, because it is equal to n+sod(n) for n = 21004409978 and 21004410005.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 219958 + ... + 300649.

It is an arithmetic number, because the mean of its divisors is an integer number (3938529672).

Almost surely, 2^21004410022 is an apocalyptic number.

21004410022 is a deficient number, since it is larger than the sum of its proper divisors (10503827354).

21004410022 is a wasteful number, since it uses less digits than its factorization.

21004410022 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 540782.

The product of its (nonzero) digits is 128, while the sum is 16.

Adding to 21004410022 its reverse (22001440012), we get a palindrome (43005850034).

The spelling of 21004410022 in words is "twenty-one billion, four million, four hundred ten thousand, twenty-two".