21303200104 has 8 divisors (see below), whose sum is σ = 39943500210. Its totient is φ = 10651600048.

The previous prime is 21303200099. The next prime is 21303200117. The reversal of 21303200104 is 40100230312.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 19046760100 + 2256440004 = 138010^2 + 47502^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a super-4 number, since 4×21303200104⁴ (a number of 42 digits) contains 4444 as substring. Note that it is a super-d number also for d = 2.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1331449999 + ... + 1331450014.

Almost surely, 2^21303200104 is an apocalyptic number.

It is an amenable number.

21303200104 is a deficient number, since it is larger than the sum of its proper divisors (18640300106).

21303200104 is a wasteful number, since it uses less digits than its factorization.

21303200104 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2662900019 (or 2662900015 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 16.

Adding to 21303200104 its reverse (40100230312), we get a palindrome (61403430416).

The spelling of 21303200104 in words is "twenty-one billion, three hundred three million, two hundred thousand, one hundred four".