21220132330 has 96 divisors (see below), whose sum is σ = 41946819840. Its totient is φ = 7721101440.

The previous prime is 21220132321. The next prime is 21220132357. The reversal of 21220132330 is 3323102212.

It is a super-2 number, since 2×21220132330² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (19).

It is a junction number, because it is equal to n+sod(n) for n = 21220132298 and 21220132307.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 10551025 + ... + 10553035.

It is an arithmetic number, because the mean of its divisors is an integer number (436946040).

Almost surely, 2^21220132330 is an apocalyptic number.

21220132330 is a deficient number, since it is larger than the sum of its proper divisors (20726687510).

21220132330 is a wasteful number, since it uses less digits than its factorization.

21220132330 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2172 (or 2153 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 19.

Adding to 21220132330 its reverse (3323102212), we get a palindrome (24543234542).

The spelling of 21220132330 in words is "twenty-one billion, two hundred twenty million, one hundred thirty-two thousand, three hundred thirty".