21344122 has 4 divisors (see below), whose sum is σ = 32016186. Its totient is φ = 10672060.

The previous prime is 21344119. The next prime is 21344131. The reversal of 21344122 is 22144312.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 12823561 + 8520561 = 3581^2 + 2919^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 21344122.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5336029 + ... + 5336032.

Almost surely, 2^21344122 is an apocalyptic number.

21344122 is a deficient number, since it is larger than the sum of its proper divisors (10672064).

21344122 is a wasteful number, since it uses less digits than its factorization.

21344122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10672063.

The product of its digits is 384, while the sum is 19.

The square root of 21344122 is about 4619.9699133219. The cubic root of 21344122 is about 277.3912546341.

Adding to 21344122 its reverse (22144312), we get a palindrome (43488434).

The spelling of 21344122 in words is "twenty-one million, three hundred forty-four thousand, one hundred twenty-two".