21023302004 has 12 divisors (see below), whose sum is σ = 36983401728. Its totient is φ = 10456615800.

The previous prime is 21023301979. The next prime is 21023302121. The reversal of 21023302004 is 40020332012.

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, 13757942 + ... + 13759469.

It is an arithmetic number, because the mean of its divisors is an integer number (3081950144).

Almost surely, 2^21023302004 is an apocalyptic number.

It is an amenable number.

21023302004 is a deficient number, since it is larger than the sum of its proper divisors (15960099724).

21023302004 is a wasteful number, since it uses less digits than its factorization.

21023302004 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27517606 (or 27517604 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 17.

Adding to 21023302004 its reverse (40020332012), we get a palindrome (61043634016).

The spelling of 21023302004 in words is "twenty-one billion, twenty-three million, three hundred two thousand, four".