21301322113020 has 96 divisors (see below), whose sum is σ = 61267734997056. Its totient is φ = 5525743104000.

The previous prime is 21301322113013. The next prime is 21301322113039. The reversal of 21301322113020 is 2031122310312.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (31) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 10383700 + ... + 12264740.

It is an arithmetic number, because the mean of its divisors is an integer number (638205572886).

Almost surely, 2^{21301322113020} is an apocalyptic number.

21301322113020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 21301322113020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (30633867498528).

21301322113020 is an abundant number, since it is smaller than the sum of its proper divisors (39966412884036).

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

21301322113020 is a wasteful number, since it uses less digits than its factorization.

21301322113020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1886191 (or 1886189 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 21.

Adding to 21301322113020 its reverse (2031122310312), we get a palindrome (23332444423332).

The spelling of 21301322113020 in words is "twenty-one trillion, three hundred one billion, three hundred twenty-two million, one hundred thirteen thousand, twenty".