21010000204 has 24 divisors (see below), whose sum is σ = 37263877056. Its totient is φ = 10363920000.

The previous prime is 21010000199. The next prime is 21010000217. The reversal of 21010000204 is 40200001012.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20989 + ... + 206059.

It is an arithmetic number, because the mean of its divisors is an integer number (1552661544).

Almost surely, 2^21010000204 is an apocalyptic number.

It is an amenable number.

21010000204 is a deficient number, since it is larger than the sum of its proper divisors (16253876852).

21010000204 is a wasteful number, since it uses less digits than its factorization.

21010000204 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 185457 (or 185455 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 10.

Adding to 21010000204 its reverse (40200001012), we get a palindrome (61210001216).

The spelling of 21010000204 in words is "twenty-one billion, ten million, two hundred four", and thus it is an aban number.