21343322 has 48 divisors (see below), whose sum is σ = 43781472. Its totient is φ = 7670880.

The previous prime is 21343307. The next prime is 21343331. The reversal of 21343322 is 22334312.

It is a junction number, because it is equal to n+sod(n) for n = 21343294 and 21343303.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 13253 + ... + 14775.

It is an arithmetic number, because the mean of its divisors is an integer number (912114).

Almost surely, 2^21343322 is an apocalyptic number.

21343322 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

21343322 is an abundant number, since it is smaller than the sum of its proper divisors (22438150).

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

21343322 is a wasteful number, since it uses less digits than its factorization.

21343322 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1563 (or 1556 counting only the distinct ones).

The product of its digits is 864, while the sum is 20.

The square root of 21343322 is about 4619.8833318602. The cubic root of 21343322 is about 277.3877889528.

Adding to 21343322 its reverse (22334312), we get a palindrome (43677634).

It can be divided in two parts, 21 and 343322, that added together give a palindrome (343343).

The spelling of 21343322 in words is "twenty-one million, three hundred forty-three thousand, three hundred twenty-two".