21303201100 has 36 divisors (see below), whose sum is σ = 46245883824. Its totient is φ = 8517974080.

The previous prime is 21303201097. The next prime is 21303201121. The reversal of 21303201100 is 110230312.

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, 226302 + ... + 306298.

It is an arithmetic number, because the mean of its divisors is an integer number (1284607884).

Almost surely, 2^21303201100 is an apocalyptic number.

21303201100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21303201100 is an abundant number, since it is smaller than the sum of its proper divisors (24942682724).

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

21303201100 is a wasteful number, since it uses less digits than its factorization.

21303201100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 82674 (or 82667 counting only the distinct ones).

The product of its (nonzero) digits is 36, while the sum is 13.

Adding to 21303201100 its reverse (110230312), we get a palindrome (21413431412).

The spelling of 21303201100 in words is "twenty-one billion, three hundred three million, two hundred one thousand, one hundred".