21301123300 has 18 divisors (see below), whose sum is σ = 46223437778. Its totient is φ = 8520449280.

The previous prime is 21301123253. The next prime is 21301123309. The reversal of 21301123300 is 332110312.

It can be written as a sum of positive squares in 3 ways, for example, as 16064064 + 21285059236 = 4008^2 + 145894^2 .

It is not an unprimeable number, because it can be changed into a prime (21301123309) 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, 106505517 + ... + 106505716.

Almost surely, 2^21301123300 is an apocalyptic number.

21301123300 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21301123300 is an abundant number, since it is smaller than the sum of its proper divisors (24922314478).

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

21301123300 is a wasteful number, since it uses less digits than its factorization.

21301123300 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 213011247 (or 213011240 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 16.

Adding to 21301123300 its reverse (332110312), we get a palindrome (21633233612).

The spelling of 21301123300 in words is "twenty-one billion, three hundred one million, one hundred twenty-three thousand, three hundred".