22330621 has 2 divisors, whose sum is σ = 22330622. Its totient is φ = 22330620.

The previous prime is 22330619. The next prime is 22330657. The reversal of 22330621 is 12603322.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 16924996 + 5405625 = 4114^2 + 2325^2 .

It is a cyclic number.

It is not a de Polignac number, because 22330621 - 2¹ = 22330619 is a prime.

Together with 22330619, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22330921) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11165310 + 11165311.

It is an arithmetic number, because the mean of its divisors is an integer number (11165311).

Almost surely, 2^22330621 is an apocalyptic number.

It is an amenable number.

22330621 is a deficient number, since it is larger than the sum of its proper divisors (1).

22330621 is an equidigital number, since it uses as much as digits as its factorization.

22330621 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 432, while the sum is 19.

The square root of 22330621 is about 4725.5286476753. The cubic root of 22330621 is about 281.6006158316.

Adding to 22330621 its reverse (12603322), we get a palindrome (34933943).

The spelling of 22330621 in words is "twenty-two million, three hundred thirty thousand, six hundred twenty-one".