21116301782312 has 16 divisors (see below), whose sum is σ = 43192435464000. Its totient is φ = 9598318991920.

The previous prime is 21116301782299. The next prime is 21116301782377. The reversal of 21116301782312 is 21328710361112.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 119978987312 + ... + 119978987487.

It is an arithmetic number, because the mean of its divisors is an integer number (2699527216500).

Almost surely, 2^{21116301782312} is an apocalyptic number.

21116301782312 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

21116301782312 is an abundant number, since it is smaller than the sum of its proper divisors (22076133681688).

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

21116301782312 is a wasteful number, since it uses less digits than its factorization.

21116301782312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 239957974816 (or 239957974812 counting only the distinct ones).

The product of its (nonzero) digits is 24192, while the sum is 38.

The spelling of 21116301782312 in words is "twenty-one trillion, one hundred sixteen billion, three hundred one million, seven hundred eighty-two thousand, three hundred twelve".