21101120313312 has 96 divisors (see below), whose sum is σ = 62790783189120. Its totient is φ = 6150933849600.

The previous prime is 21101120313289. The next prime is 21101120313347. The reversal of 21101120313312 is 21331302110112.

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

It is a congruent number.

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, 444922314 + ... + 444969737.

It is an arithmetic number, because the mean of its divisors is an integer number (654070658220).

Almost surely, 2^{21101120313312} is an apocalyptic number.

It is an amenable number.

21101120313312 is an abundant number, since it is smaller than the sum of its proper divisors (41689662875808).

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

21101120313312 is a wasteful number, since it uses less digits than its factorization.

21101120313312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 889892096 (or 889892088 counting only the distinct ones).

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

Adding to 21101120313312 its reverse (21331302110112), we get a palindrome (42432422423424).

The spelling of 21101120313312 in words is "twenty-one trillion, one hundred one billion, one hundred twenty million, three hundred thirteen thousand, three hundred twelve".