22606321 has 2 divisors, whose sum is σ = 22606322. Its totient is φ = 22606320.

The previous prime is 22606319. The next prime is 22606327. The reversal of 22606321 is 12360622.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 21902400 + 703921 = 4680^2 + 839^2 .

It is a cyclic number.

It is not a de Polignac number, because 22606321 - 2¹ = 22606319 is a prime.

It is a super-2 number, since 2×22606321² = 1022091498310082, which contains 22 as substring.

Together with 22606319, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 22606292 and 22606301.

It is not a weakly prime, because it can be changed into another prime (22606327) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11303160 + 11303161.

It is an arithmetic number, because the mean of its divisors is an integer number (11303161).

Almost surely, 2^22606321 is an apocalyptic number.

It is an amenable number.

22606321 is a deficient number, since it is larger than the sum of its proper divisors (1).

22606321 is an equidigital number, since it uses as much as digits as its factorization.

22606321 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 864, while the sum is 22.

The square root of 22606321 is about 4754.6104992943. The cubic root of 22606321 is about 282.7547851519.

Adding to 22606321 its reverse (12360622), we get a palindrome (34966943).

The spelling of 22606321 in words is "twenty-two million, six hundred six thousand, three hundred twenty-one".