21132140224 has 56 divisors (see below), whose sum is σ = 47816280288. Its totient is φ = 9179566080.

The previous prime is 21132140219. The next prime is 21132140287. The reversal of 21132140224 is 42204123112.

It is a junction number, because it is equal to n+sod(n) for n = 21132140195 and 21132140204.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 732892 + ... + 761179.

It is an arithmetic number, because the mean of its divisors is an integer number (853862148).

Almost surely, 2^21132140224 is an apocalyptic number.

It is an amenable number.

21132140224 is an abundant number, since it is smaller than the sum of its proper divisors (26684140064).

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

21132140224 is a wasteful number, since it uses less digits than its factorization.

21132140224 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1494113 (or 1494103 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 22.

Adding to 21132140224 its reverse (42204123112), we get a palindrome (63336263336).

The spelling of 21132140224 in words is "twenty-one billion, one hundred thirty-two million, one hundred forty thousand, two hundred twenty-four".