21330312010176 has 112 divisors (see below), whose sum is σ = 60865677047168. Its totient is φ = 6553674316800.

The previous prime is 21330312010057. The next prime is 21330312010177. The reversal of 21330312010176 is 67101021303312.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21330312010177) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4458910 + ... + 7908381.

It is an arithmetic number, because the mean of its divisors is an integer number (543443545064).

Almost surely, 2^{21330312010176} is an apocalyptic number.

21330312010176 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

It is an amenable number.

21330312010176 is an abundant number, since it is smaller than the sum of its proper divisors (39535365036992).

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

21330312010176 is a wasteful number, since it uses less digits than its factorization.

21330312010176 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12368010 (or 12368000 counting only the distinct ones).

The product of its (nonzero) digits is 4536, while the sum is 30.

Adding to 21330312010176 its reverse (67101021303312), we get a palindrome (88431333313488).

The spelling of 21330312010176 in words is "twenty-one trillion, three hundred thirty billion, three hundred twelve million, ten thousand, one hundred seventy-six".