22601321 has 2 divisors, whose sum is σ = 22601322. Its totient is φ = 22601320.

The previous prime is 22601287. The next prime is 22601329. The reversal of 22601321 is 12310622.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 13213225 + 9388096 = 3635^2 + 3064^2 .

It is a cyclic number.

It is not a de Polignac number, because 22601321 - 2¹⁰ = 22600297 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 22601321.

It is not a weakly prime, because it can be changed into another prime (22601329) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11300660 + 11300661.

It is an arithmetic number, because the mean of its divisors is an integer number (11300661).

Almost surely, 2^22601321 is an apocalyptic number.

It is an amenable number.

22601321 is a deficient number, since it is larger than the sum of its proper divisors (1).

22601321 is an equidigital number, since it uses as much as digits as its factorization.

22601321 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 144, while the sum is 17.

The square root of 22601321 is about 4754.0846647909. The cubic root of 22601321 is about 282.7339373226.

Adding to 22601321 its reverse (12310622), we get a palindrome (34911943).

It can be divided in two parts, 22601 and 321, that added together give a palindrome (22922).

The spelling of 22601321 in words is "twenty-two million, six hundred one thousand, three hundred twenty-one".