21222132132 has 24 divisors (see below), whose sum is σ = 49804546176. Its totient is φ = 7033152928.

The previous prime is 21222132119. The next prime is 21222132149. The reversal of 21222132132 is 23123122212.

It is a nude number because it is divisible by every one of its digits.

It is a junction number, because it is equal to n+sod(n) for n = 21222132099 and 21222132108.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5109228 + ... + 5113379.

It is an arithmetic number, because the mean of its divisors is an integer number (2075189424).

Almost surely, 2^21222132132 is an apocalyptic number.

It is an amenable number.

21222132132 is an abundant number, since it is smaller than the sum of its proper divisors (28582414044).

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

21222132132 is a wasteful number, since it uses less digits than its factorization.

21222132132 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10222787 (or 10222785 counting only the distinct ones).

The product of its digits is 576, while the sum is 21.

Adding to 21222132132 its reverse (23123122212), we get a palindrome (44345254344).

The spelling of 21222132132 in words is "twenty-one billion, two hundred twenty-two million, one hundred thirty-two thousand, one hundred thirty-two".