21343220300 has 36 divisors (see below), whose sum is σ = 48328479696. Its totient is φ = 8166100800.

The previous prime is 21343220263. The next prime is 21343220329. The reversal of 21343220300 is 302234312.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4637531 + ... + 4642130.

Almost surely, 2^21343220300 is an apocalyptic number.

21343220300 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21343220300 is an abundant number, since it is smaller than the sum of its proper divisors (26985259396).

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

21343220300 is a wasteful number, since it uses less digits than its factorization.

21343220300 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9279698 (or 9279691 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 20.

Adding to 21343220300 its reverse (302234312), we get a palindrome (21645454612).

The spelling of 21343220300 in words is "twenty-one billion, three hundred forty-three million, two hundred twenty thousand, three hundred".