21321141221300 has 72 divisors (see below), whose sum is σ = 46327119374592. Its totient is φ = 8517358000000.

The previous prime is 21321141221269. The next prime is 21321141221309. The reversal of 21321141221300 is 312214112312.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21321141221309) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 289059425 + ... + 289133175.

It is an arithmetic number, because the mean of its divisors is an integer number (643432213536).

Almost surely, 2^{21321141221300} is an apocalyptic number.

21321141221300 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21321141221300 is an abundant number, since it is smaller than the sum of its proper divisors (25005978153292).

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

21321141221300 is a wasteful number, since it uses less digits than its factorization.

21321141221300 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 77489 (or 77482 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 23.

Adding to 21321141221300 its reverse (312214112312), we get a palindrome (21633355333612).

The spelling of 21321141221300 in words is "twenty-one trillion, three hundred twenty-one billion, one hundred forty-one million, two hundred twenty-one thousand, three hundred".