21433004112 has 320 divisors, whose sum is σ = 66775726080. Its totient is φ = 5859330048.

The previous prime is 21433004111. The next prime is 21433004129. The reversal of 21433004112 is 21140033412.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21433004111) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 14451723 + ... + 14453205.

It is an arithmetic number, because the mean of its divisors is an integer number (208674144).

Almost surely, 2^21433004112 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 21433004112, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (33387863040).

21433004112 is an abundant number, since it is smaller than the sum of its proper divisors (45342721968).

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

21433004112 is a wasteful number, since it uses less digits than its factorization.

21433004112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1602 (or 1596 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 21.

Adding to 21433004112 its reverse (21140033412), we get a palindrome (42573037524).

It can be divided in two parts, 2143300 and 4112, that added together give a palindrome (2147412).

The spelling of 21433004112 in words is "twenty-one billion, four hundred thirty-three million, four thousand, one hundred twelve".