21113322 has 8 divisors (see below), whose sum is σ = 42226656. Its totient is φ = 7037772.

The previous prime is 21113317. The next prime is 21113329. The reversal of 21113322 is 22331112.

It is a sphenic number, since it is the product of 3 distinct primes.

21113322 is an admirable number.

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 (21113329) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1759438 + ... + 1759449.

It is an arithmetic number, because the mean of its divisors is an integer number (5278332).

Almost surely, 2^21113322 is an apocalyptic number.

21113322 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

21113322 is a wasteful number, since it uses less digits than its factorization.

21113322 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3518892.

The product of its digits is 72, while the sum is 15.

The square root of 21113322 is about 4594.9235031717. The cubic root of 21113322 is about 276.3877924132.

Adding to 21113322 its reverse (22331112), we get a palindrome (43444434).

The spelling of 21113322 in words is "twenty-one million, one hundred thirteen thousand, three hundred twenty-two".