21002432300 has 36 divisors (see below), whose sum is σ = 45601169880. Its totient is φ = 8396200320.

The previous prime is 21002432293. The next prime is 21002432351. The reversal of 21002432300 is 323420012.

It is a super-2 number, since 2×21002432300² (a number of 21 digits) contains 22 as substring.

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, 119936 + ... + 237464.

Almost surely, 2^21002432300 is an apocalyptic number.

21002432300 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21002432300 is an abundant number, since it is smaller than the sum of its proper divisors (24598737580).

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

21002432300 is a wasteful number, since it uses less digits than its factorization.

21002432300 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 119330 (or 119323 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 17.

Adding to 21002432300 its reverse (323420012), we get a palindrome (21325852312).

The spelling of 21002432300 in words is "twenty-one billion, two million, four hundred thirty-two thousand, three hundred".