21011004000300 has 144 divisors (see below), whose sum is σ = 61431783725312. Its totient is φ = 5544041414400.

The previous prime is 21011004000253. The next prime is 21011004000313. The reversal of 21011004000300 is 300040011012.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 37948455 + ... + 38498145.

Almost surely, 2^{21011004000300} is an apocalyptic number.

21011004000300 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 21011004000300, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (30715891862656).

21011004000300 is an abundant number, since it is smaller than the sum of its proper divisors (40420779725012).

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

21011004000300 is a wasteful number, since it uses less digits than its factorization.

21011004000300 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 551048 (or 551041 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 12.

Adding to 21011004000300 its reverse (300040011012), we get a palindrome (21311044011312).

The spelling of 21011004000300 in words is "twenty-one trillion, eleven billion, four million, three hundred", and thus it is an aban number.