21103302300 has 36 divisors (see below), whose sum is σ = 61058888856. Its totient is φ = 5627547200.

The previous prime is 21103302281. The next prime is 21103302317. The reversal of 21103302300 is 320330112.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 21103302300.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 35171871 + ... + 35172470.

It is an arithmetic number, because the mean of its divisors is an integer number (1696080246).

Almost surely, 2^21103302300 is an apocalyptic number.

21103302300 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21103302300 is an abundant number, since it is smaller than the sum of its proper divisors (39955586556).

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

21103302300 is a wasteful number, since it uses less digits than its factorization.

21103302300 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 70344358 (or 70344351 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 15.

Adding to 21103302300 its reverse (320330112), we get a palindrome (21423632412).

The spelling of 21103302300 in words is "twenty-one billion, one hundred three million, three hundred two thousand, three hundred".