21024322 has 16 divisors (see below), whose sum is σ = 35137152. Its totient is φ = 9352720.

The previous prime is 21024313. The next prime is 21024331. The reversal of 21024322 is 22342012.

It is an interprime number because it is at equal distance from previous prime (21024313) and next prime (21024331).

It is a junction number, because it is equal to n+sod(n) for n = 21024296 and 21024305.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9133 + ... + 11200.

It is an arithmetic number, because the mean of its divisors is an integer number (2196072).

Almost surely, 2^21024322 is an apocalyptic number.

21024322 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

21024322 is a deficient number, since it is larger than the sum of its proper divisors (14112830).

21024322 is a wasteful number, since it uses less digits than its factorization.

21024322 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20393.

The product of its (nonzero) digits is 192, while the sum is 16.

The square root of 21024322 is about 4585.2286747773. The cubic root of 21024322 is about 275.9988885343.

Adding to 21024322 its reverse (22342012), we get a palindrome (43366334).

The spelling of 21024322 in words is "twenty-one million, twenty-four thousand, three hundred twenty-two".