21221104322 has 32 divisors (see below), whose sum is σ = 36758335680. Its totient is φ = 9096736320.

The previous prime is 21221104321. The next prime is 21221104363. The reversal of 21221104322 is 22340112212.

21221104322 is digitally balanced in base 5, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 21221104294 and 21221104303.

It is not an unprimeable number, because it can be changed into a prime (21221104321) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 359333 + ... + 414200.

It is an arithmetic number, because the mean of its divisors is an integer number (1148697990).

Almost surely, 2^21221104322 is an apocalyptic number.

21221104322 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

21221104322 is a deficient number, since it is larger than the sum of its proper divisors (15537231358).

21221104322 is a wasteful number, since it uses less digits than its factorization.

21221104322 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 773618.

The product of its (nonzero) digits is 384, while the sum is 20.

Adding to 21221104322 its reverse (22340112212), we get a palindrome (43561216534).

The spelling of 21221104322 in words is "twenty-one billion, two hundred twenty-one million, one hundred four thousand, three hundred twenty-two".