21102232313312 has 24 divisors (see below), whose sum is σ = 43988844566016. Its totient is φ = 9930462264832.

The previous prime is 21102232313311. The next prime is 21102232313333. The reversal of 21102232313312 is 21331323220112.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21102232313311) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 19395433568 + ... + 19395434655.

It is an arithmetic number, because the mean of its divisors is an integer number (1832868523584).

Almost surely, 2^{21102232313312} is an apocalyptic number.

It is an amenable number.

21102232313312 is an abundant number, since it is smaller than the sum of its proper divisors (22886612252704).

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

21102232313312 is a wasteful number, since it uses less digits than its factorization.

21102232313312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38790868250 (or 38790868242 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 26.

Adding to 21102232313312 its reverse (21331323220112), we get a palindrome (42433555533424).

The spelling of 21102232313312 in words is "twenty-one trillion, one hundred two billion, two hundred thirty-two million, three hundred thirteen thousand, three hundred twelve".