21104413300 has 18 divisors (see below), whose sum is σ = 45796577078. Its totient is φ = 8441765280.

The previous prime is 21104413279. The next prime is 21104413303. The reversal of 21104413300 is 331440112.

It can be written as a sum of positive squares in 3 ways, for example, as 7455631716 + 13648781584 = 86346^2 + 116828^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21104413303) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 105521967 + ... + 105522166.

Almost surely, 2^21104413300 is an apocalyptic number.

21104413300 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21104413300 is an abundant number, since it is smaller than the sum of its proper divisors (24692163778).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

21104413300 is a wasteful number, since it uses less digits than its factorization.

21104413300 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 211044147 (or 211044140 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 19.

Adding to 21104413300 its reverse (331440112), we get a palindrome (21435853412).

The spelling of 21104413300 in words is "twenty-one billion, one hundred four million, four hundred thirteen thousand, three hundred".