21001120300 has 18 divisors (see below), whose sum is σ = 45572431268. Its totient is φ = 8400448080.

The previous prime is 21001120291. The next prime is 21001120367. The reversal of 21001120300 is 302110012.

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, 105005502 + ... + 105005701.

Almost surely, 2^21001120300 is an apocalyptic number.

21001120300 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21001120300 is an abundant number, since it is smaller than the sum of its proper divisors (24571310968).

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

21001120300 is a wasteful number, since it uses less digits than its factorization.

21001120300 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 210011217 (or 210011210 counting only the distinct ones).

The product of its (nonzero) digits is 12, while the sum is 10.

Adding to 21001120300 its reverse (302110012), we get a palindrome (21303230312).

The spelling of 21001120300 in words is "twenty-one billion, one million, one hundred twenty thousand, three hundred".