22343021 has 4 divisors (see below), whose sum is σ = 23113500. Its totient is φ = 21572544.

The previous prime is 22343003. The next prime is 22343029. The reversal of 22343021 is 12034322.

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

It can be written as a sum of positive squares in 2 ways, for example, as 8940100 + 13402921 = 2990^2 + 3661^2 .

It is a cyclic number.

It is not a de Polignac number, because 22343021 - 2²² = 18148717 is a prime.

It is a super-3 number, since 3×22343021³ (a number of 23 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22343029) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 385196 + ... + 385253.

It is an arithmetic number, because the mean of its divisors is an integer number (5778375).

Almost surely, 2^22343021 is an apocalyptic number.

It is an amenable number.

22343021 is a deficient number, since it is larger than the sum of its proper divisors (770479).

22343021 is an equidigital number, since it uses as much as digits as its factorization.

22343021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 770478.

The product of its (nonzero) digits is 288, while the sum is 17.

The square root of 22343021 is about 4726.8404881062. The cubic root of 22343021 is about 281.6527296459.

Adding to 22343021 its reverse (12034322), we get a palindrome (34377343).

The spelling of 22343021 in words is "twenty-two million, three hundred forty-three thousand, twenty-one".