21032312300 has 18 divisors (see below), whose sum is σ = 45640117908. Its totient is φ = 8412924880.

The previous prime is 21032312281. The next prime is 21032312309. The reversal of 21032312300 is 321323012.

It is not an unprimeable number, because it can be changed into a prime (21032312309) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 105161462 + ... + 105161661.

It is an arithmetic number, because the mean of its divisors is an integer number (2535562106).

Almost surely, 2^21032312300 is an apocalyptic number.

21032312300 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21032312300 is an abundant number, since it is smaller than the sum of its proper divisors (24607805608).

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

21032312300 is a wasteful number, since it uses less digits than its factorization.

21032312300 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 210323137 (or 210323130 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 17.

Adding to 21032312300 its reverse (321323012), we get a palindrome (21353635312).

The spelling of 21032312300 in words is "twenty-one billion, thirty-two million, three hundred twelve thousand, three hundred".