21132210224 has 20 divisors (see below), whose sum is σ = 40946394144. Its totient is φ = 10565398848.

The previous prime is 21132210223. The next prime is 21132210257. The reversal of 21132210224 is 42201223112.

It is a junction number, because it is equal to n+sod(n) for n = 21132210196 and 21132210205.

It is not an unprimeable number, because it can be changed into a prime (21132210223) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 270794 + ... + 339990.

Almost surely, 2^21132210224 is an apocalyptic number.

It is an amenable number.

21132210224 is a deficient number, since it is larger than the sum of its proper divisors (19814183920).

21132210224 is a wasteful number, since it uses less digits than its factorization.

21132210224 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 88292 (or 88286 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 20.

Adding to 21132210224 its reverse (42201223112), we get a palindrome (63333433336).

The spelling of 21132210224 in words is "twenty-one billion, one hundred thirty-two million, two hundred ten thousand, two hundred twenty-four".