21183222 has 8 divisors (see below), whose sum is σ = 42366456. Its totient is φ = 7061072.

The previous prime is 21183209. The next prime is 21183223. The reversal of 21183222 is 22238112.

It is a happy number.

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

21183222 is an admirable number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21183223) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1765263 + ... + 1765274.

It is an arithmetic number, because the mean of its divisors is an integer number (5295807).

Almost surely, 2^21183222 is an apocalyptic number.

21183222 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.

21183222 is a wasteful number, since it uses less digits than its factorization.

21183222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3530542.

The product of its digits is 384, while the sum is 21.

The square root of 21183222 is about 4602.5234382890. The cubic root of 21183222 is about 276.6924693278.

The spelling of 21183222 in words is "twenty-one million, one hundred eighty-three thousand, two hundred twenty-two".