21343222 has 8 divisors (see below), whose sum is σ = 32759496. Its totient is φ = 10423392.

The previous prime is 21343187. The next prime is 21343243. The reversal of 21343222 is 22234312.

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

It is a self number, because there is not a number n which added to its sum of digits gives 21343222.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 124003 + ... + 124174.

It is an arithmetic number, because the mean of its divisors is an integer number (4094937).

Almost surely, 2^21343222 is an apocalyptic number.

21343222 is a deficient number, since it is larger than the sum of its proper divisors (11416274).

21343222 is a wasteful number, since it uses less digits than its factorization.

21343222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 248222.

The product of its digits is 576, while the sum is 19.

The square root of 21343222 is about 4619.8725090634. The cubic root of 21343222 is about 277.3873557365.

Adding to 21343222 its reverse (22234312), we get a palindrome (43577534).

It can be divided in two parts, 2134 and 3222, that added together give a triangular number (5356 = T₁₀₃).

The spelling of 21343222 in words is "twenty-one million, three hundred forty-three thousand, two hundred twenty-two".