21322202132 has 96 divisors (see below), whose sum is σ = 48113393664. Its totient is φ = 8024054400.

The previous prime is 21322202131. The next prime is 21322202159. The reversal of 21322202132 is 23120222312.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21322202131) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 5851103 + ... + 5854745.

It is an arithmetic number, because the mean of its divisors is an integer number (501181184).

Almost surely, 2^21322202132 is an apocalyptic number.

21322202132 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 21322202132, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (24056696832).

21322202132 is an abundant number, since it is smaller than the sum of its proper divisors (26791191532).

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

21322202132 is a wasteful number, since it uses less digits than its factorization.

21322202132 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4309 (or 4307 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 20.

Adding to 21322202132 its reverse (23120222312), we get a palindrome (44442424444).

The spelling of 21322202132 in words is "twenty-one billion, three hundred twenty-two million, two hundred two thousand, one hundred thirty-two".