21002112230320 has 80 divisors (see below), whose sum is σ = 52586867787552. Its totient is φ = 7754506629120.

The previous prime is 21002112230287. The next prime is 21002112230321. The reversal of 21002112230320 is 2303221120012.

It is a tau number, because it is divible by the number of its divisors (80).

It is not an unprimeable number, because it can be changed into a prime (21002112230321) 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 15 ways as a sum of consecutive naturals, for example, 95948200 + ... + 96166840.

Almost surely, 2^{21002112230320} is an apocalyptic number.

21002112230320 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21002112230320 is an abundant number, since it is smaller than the sum of its proper divisors (31584755557232).

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

21002112230320 is a wasteful number, since it uses less digits than its factorization.

21002112230320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 311030 (or 311024 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 19.

Adding to 21002112230320 its reverse (2303221120012), we get a palindrome (23305333350332).

The spelling of 21002112230320 in words is "twenty-one trillion, two billion, one hundred twelve million, two hundred thirty thousand, three hundred twenty".