21221132322 has 32 divisors (see below), whose sum is σ = 45872108352. Its totient is φ = 6506000064.

The previous prime is 21221132311. The next prime is 21221132323. The reversal of 21221132322 is 22323112212.

It is a super-2 number, since 2×21221132322² (a number of 21 digits) contains 22 as substring.

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

It is not an unprimeable number, because it can be changed into a prime (21221132323) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 469488 + ... + 512699.

It is an arithmetic number, because the mean of its divisors is an integer number (1433503386).

Almost surely, 2^21221132322 is an apocalyptic number.

21221132322 is an abundant number, since it is smaller than the sum of its proper divisors (24650976030).

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

21221132322 is a wasteful number, since it uses less digits than its factorization.

21221132322 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 982482.

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

Adding to 21221132322 its reverse (22323112212), we get a palindrome (43544244534).

The spelling of 21221132322 in words is "twenty-one billion, two hundred twenty-one million, one hundred thirty-two thousand, three hundred twenty-two".