22022237 has 2 divisors, whose sum is σ = 22022238. Its totient is φ = 22022236.

The previous prime is 22022227. The next prime is 22022257. The reversal of 22022237 is 73222022.

It is an a-pointer prime, because the next prime (22022257) can be obtained adding 22022237 to its sum of digits (20).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 21585316 + 436921 = 4646^2 + 661^2 .

It is a cyclic number.

It is not a de Polignac number, because 22022237 - 2⁸ = 22021981 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22022227) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11011118 + 11011119.

It is an arithmetic number, because the mean of its divisors is an integer number (11011119).

Almost surely, 2^22022237 is an apocalyptic number.

It is an amenable number.

22022237 is a deficient number, since it is larger than the sum of its proper divisors (1).

22022237 is an equidigital number, since it uses as much as digits as its factorization.

22022237 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 672, while the sum is 20.

The square root of 22022237 is about 4692.7856332886. The cubic root of 22022237 is about 280.2983087731.

Adding to 22022237 its reverse (73222022), we get a palindrome (95244259).

The spelling of 22022237 in words is "twenty-two million, twenty-two thousand, two hundred thirty-seven".