21002022010204 has 96 divisors (see below), whose sum is σ = 40735305031680. Its totient is φ = 9443956084992.

The previous prime is 21002022010141. The next prime is 21002022010217. The reversal of 21002022010204 is 40201022020012.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 11808214 + ... + 13469890.

It is an arithmetic number, because the mean of its divisors is an integer number (424326094080).

Almost surely, 2^{21002022010204} is an apocalyptic number.

It is an amenable number.

21002022010204 is a deficient number, since it is larger than the sum of its proper divisors (19733283021476).

21002022010204 is a wasteful number, since it uses less digits than its factorization.

21002022010204 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1661867 (or 1661865 counting only the distinct ones).

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

Adding to 21002022010204 its reverse (40201022020012), we get a palindrome (61203044030216).

The spelling of 21002022010204 in words is "twenty-one trillion, two billion, twenty-two million, ten thousand, two hundred four".