21300131121312 has 96 divisors (see below), whose sum is σ = 56744507232000. Its totient is φ = 6994829058048.

The previous prime is 21300131121301. The next prime is 21300131121329. The reversal of 21300131121312 is 21312113100312.

It is a tau number, because it is divible by the number of its divisors (96).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 393064 + ... + 6538712.

It is an arithmetic number, because the mean of its divisors is an integer number (591088617000).

Almost surely, 2^{21300131121312} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 21300131121312, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (28372253616000).

21300131121312 is an abundant number, since it is smaller than the sum of its proper divisors (35444376110688).

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

21300131121312 is a wasteful number, since it uses less digits than its factorization.

21300131121312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6146198 (or 6146190 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 21.

Adding to 21300131121312 its reverse (21312113100312), we get a palindrome (42612244221624).

The spelling of 21300131121312 in words is "twenty-one trillion, three hundred billion, one hundred thirty-one million, one hundred twenty-one thousand, three hundred twelve".