21112134024012 has 96 divisors (see below), whose sum is σ = 50284812614400. Its totient is φ = 6892149933312.

The previous prime is 21112134024011. The next prime is 21112134024029. The reversal of 21112134024012 is 21042043121112.

It is a super-2 number, since 2×21112134024012² (a number of 27 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (21112134024011) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 234881503 + ... + 234971369.

It is an arithmetic number, because the mean of its divisors is an integer number (523800131400).

Almost surely, 2^{21112134024012} is an apocalyptic number.

It is an amenable number.

21112134024012 is an abundant number, since it is smaller than the sum of its proper divisors (29172678590388).

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

21112134024012 is a wasteful number, since it uses less digits than its factorization.

21112134024012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 91175 (or 91173 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 24.

Adding to 21112134024012 its reverse (21042043121112), we get a palindrome (42154177145124).

The spelling of 21112134024012 in words is "twenty-one trillion, one hundred twelve billion, one hundred thirty-four million, twenty-four thousand, twelve".