21332312110212 has 48 divisors (see below), whose sum is σ = 52846965400320. Its totient is φ = 6674254382592.

The previous prime is 21332312110201. The next prime is 21332312110267. The reversal of 21332312110212 is 21201121323312.

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, 142391287 + ... + 142541022.

It is an arithmetic number, because the mean of its divisors is an integer number (1100978445840).

Almost surely, 2^{21332312110212} is an apocalyptic number.

It is an amenable number.

21332312110212 is an abundant number, since it is smaller than the sum of its proper divisors (31514653290108).

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

21332312110212 is a wasteful number, since it uses less digits than its factorization.

21332312110212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 284932700 (or 284932698 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 24.

Adding to 21332312110212 its reverse (21201121323312), we get a palindrome (42533433433524).

The spelling of 21332312110212 in words is "twenty-one trillion, three hundred thirty-two billion, three hundred twelve million, one hundred ten thousand, two hundred twelve".