21000231300 has 36 divisors (see below), whose sum is σ = 60760670096. Its totient is φ = 5600061600.

The previous prime is 21000231299. The next prime is 21000231313. The reversal of 21000231300 is 313200012.

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 11 ways as a sum of consecutive naturals, for example, 35000086 + ... + 35000685.

Almost surely, 2^21000231300 is an apocalyptic number.

21000231300 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21000231300 is an abundant number, since it is smaller than the sum of its proper divisors (39760438796).

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

21000231300 is a wasteful number, since it uses less digits than its factorization.

21000231300 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 70000788 (or 70000781 counting only the distinct ones).

The product of its (nonzero) digits is 36, while the sum is 12.

Adding to 21000231300 its reverse (313200012), we get a palindrome (21313431312).

The spelling of 21000231300 in words is "twenty-one billion, two hundred thirty-one thousand, three hundred".