22140361 has 2 divisors, whose sum is σ = 22140362. Its totient is φ = 22140360.

The previous prime is 22140353. The next prime is 22140383. The reversal of 22140361 is 16304122.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 18361225 + 3779136 = 4285^2 + 1944^2 .

It is a cyclic number.

It is not a de Polignac number, because 22140361 - 2³ = 22140353 is a prime.

It is not a weakly prime, because it can be changed into another prime (22140661) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11070180 + 11070181.

It is an arithmetic number, because the mean of its divisors is an integer number (11070181).

Almost surely, 2^22140361 is an apocalyptic number.

It is an amenable number.

22140361 is a deficient number, since it is larger than the sum of its proper divisors (1).

22140361 is an equidigital number, since it uses as much as digits as its factorization.

22140361 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 288, while the sum is 19.

The square root of 22140361 is about 4705.3545031166. The cubic root of 22140361 is about 280.7985748488.

Adding to 22140361 its reverse (16304122), we get a palindrome (38444483).

The spelling of 22140361 in words is "twenty-two million, one hundred forty thousand, three hundred sixty-one".