21024130024112 has 80 divisors (see below), whose sum is σ = 42951187614720. Its totient is φ = 9949578541056.

The previous prime is 21024130024111. The next prime is 21024130024141. The reversal of 21024130024112 is 21142003142012.

It is a Harshad number since it is a multiple of its sum of digits (23).

It is not an unprimeable number, because it can be changed into a prime (21024130024111) 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, 211377689 + ... + 211477127.

It is an arithmetic number, because the mean of its divisors is an integer number (536889845184).

Almost surely, 2^{21024130024112} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 21024130024112, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (21475593807360).

21024130024112 is an abundant number, since it is smaller than the sum of its proper divisors (21927057590608).

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

21024130024112 is a wasteful number, since it uses less digits than its factorization.

21024130024112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 105490 (or 105484 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 23.

Adding to 21024130024112 its reverse (21142003142012), we get a palindrome (42166133166124).

The spelling of 21024130024112 in words is "twenty-one trillion, twenty-four billion, one hundred thirty million, twenty-four thousand, one hundred twelve".