21111100300 has 18 divisors (see below), whose sum is σ = 45811087868. Its totient is φ = 8444440080.

The previous prime is 21111100289. The next prime is 21111100343. The reversal of 21111100300 is 300111112.

It is a Harshad number since it is a multiple of its sum of digits (10).

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 5 ways as a sum of consecutive naturals, for example, 105555402 + ... + 105555601.

Almost surely, 2^21111100300 is an apocalyptic number.

21111100300 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21111100300 is an abundant number, since it is smaller than the sum of its proper divisors (24699987568).

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

21111100300 is a wasteful number, since it uses less digits than its factorization.

21111100300 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 211111017 (or 211111010 counting only the distinct ones).

The product of its (nonzero) digits is 6, while the sum is 10.

Adding to 21111100300 its reverse (300111112), we get a palindrome (21411211412).

The spelling of 21111100300 in words is "twenty-one billion, one hundred eleven million, one hundred thousand, three hundred".