21132044340224 has 44 divisors (see below), whose sum is σ = 42285155328624. Its totient is φ = 10555591225344.

The previous prime is 21132044340181. The next prime is 21132044340233. The reversal of 21132044340224 is 42204344023112.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (32).

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9148652 + ... + 11223275.

Almost surely, 2^{21132044340224} is an apocalyptic number.

It is an amenable number.

21132044340224 is an abundant number, since it is smaller than the sum of its proper divisors (21153110988400).

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

21132044340224 is a wasteful number, since it uses less digits than its factorization.

21132044340224 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20372960 (or 20372942 counting only the distinct ones).

The product of its (nonzero) digits is 36864, while the sum is 32.

Adding to 21132044340224 its reverse (42204344023112), we get a palindrome (63336388363336).

The spelling of 21132044340224 in words is "twenty-one trillion, one hundred thirty-two billion, forty-four million, three hundred forty thousand, two hundred twenty-four".