21032244522 has 96 divisors (see below), whose sum is σ = 50115686400. Its totient is φ = 6345146016.

The previous prime is 21032244509. The next prime is 21032244551. The reversal of 21032244522 is 22544223012.

21032244522 is a `hidden beast` number, since 210 + 3 + 2 + 2 + 445 + 2 + 2 = 666.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 11192379 + ... + 11194257.

It is an arithmetic number, because the mean of its divisors is an integer number (522038400).

Almost surely, 2^21032244522 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 21032244522, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (25057843200).

21032244522 is an abundant number, since it is smaller than the sum of its proper divisors (29083441878).

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

21032244522 is a wasteful number, since it uses less digits than its factorization.

21032244522 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3352 (or 3349 counting only the distinct ones).

The product of its (nonzero) digits is 7680, while the sum is 27.

Adding to 21032244522 its reverse (22544223012), we get a palindrome (43576467534).

The spelling of 21032244522 in words is "twenty-one billion, thirty-two million, two hundred forty-four thousand, five hundred twenty-two".