21242312112032 has 96 divisors (see below), whose sum is σ = 48311025255360. Its totient is φ = 9086746439680.

The previous prime is 21242312112013. The next prime is 21242312112199. The reversal of 21242312112032 is 23021121324212.

It is a junction number, because it is equal to n+sod(n) for n = 21242312111992 and 21242312112010.

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, 64096898 + ... + 64427454.

It is an arithmetic number, because the mean of its divisors is an integer number (503239846410).

Almost surely, 2^{21242312112032} is an apocalyptic number.

21242312112032 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 21242312112032, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (24155512627680).

21242312112032 is an abundant number, since it is smaller than the sum of its proper divisors (27068713143328).

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

21242312112032 is a wasteful number, since it uses less digits than its factorization.

21242312112032 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 341334 (or 341326 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 26.

Adding to 21242312112032 its reverse (23021121324212), we get a palindrome (44263433436244).

The spelling of 21242312112032 in words is "twenty-one trillion, two hundred forty-two billion, three hundred twelve million, one hundred twelve thousand, thirty-two".