21352322 has 8 divisors (see below), whose sum is σ = 32632956. Its totient is φ = 10474672.

The previous prime is 21352291. The next prime is 21352343. The reversal of 21352322 is 22325312.

It can be written as a sum of positive squares in 2 ways, for example, as 21335161 + 17161 = 4619^2 + 131^2 .

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

It is a junction number, because it is equal to n+sod(n) for n = 21352294 and 21352303.

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, 100613 + ... + 100824.

Almost surely, 2^21352322 is an apocalyptic number.

21352322 is a deficient number, since it is larger than the sum of its proper divisors (11280634).

21352322 is a wasteful number, since it uses less digits than its factorization.

21352322 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 201492.

The product of its digits is 720, while the sum is 20.

The square root of 21352322 is about 4620.8572797696. The cubic root of 21352322 is about 277.4267728760.

Adding to 21352322 its reverse (22325312), we get a palindrome (43677634).

The spelling of 21352322 in words is "twenty-one million, three hundred fifty-two thousand, three hundred twenty-two".