21219337735232 has 112 divisors (see below), whose sum is σ = 51860952635520. Its totient is φ = 8388502290432.

The previous prime is 21219337735223. The next prime is 21219337735249. The reversal of 21219337735232 is 23253773391212.

It is a tau number, because it is divible by the number of its divisors (112).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6913103 + ... + 9498929.

It is an arithmetic number, because the mean of its divisors is an integer number (463044219960).

Almost surely, 2^{21219337735232} 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 21219337735232, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (25930476317760).

21219337735232 is an abundant number, since it is smaller than the sum of its proper divisors (30641614900288).

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

21219337735232 is a wasteful number, since it uses less digits than its factorization.

21219337735232 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2587268 (or 2587258 counting only the distinct ones).

The product of its digits is 2857680, while the sum is 50.

The spelling of 21219337735232 in words is "twenty-one trillion, two hundred nineteen billion, three hundred thirty-seven million, seven hundred thirty-five thousand, two hundred thirty-two".