22204213237 has 2 divisors, whose sum is σ = 22204213238. Its totient is φ = 22204213236.

The previous prime is 22204213211. The next prime is 22204213253. The reversal of 22204213237 is 73231240222.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 17454108996 + 4750104241 = 132114^2 + 68921^2 .

It is a cyclic number.

It is not a de Polignac number, because 22204213237 - 2¹¹ = 22204211189 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22204213277) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11102106618 + 11102106619.

It is an arithmetic number, because the mean of its divisors is an integer number (11102106619).

Almost surely, 2^22204213237 is an apocalyptic number.

It is an amenable number.

22204213237 is a deficient number, since it is larger than the sum of its proper divisors (1).

22204213237 is an equidigital number, since it uses as much as digits as its factorization.

22204213237 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 8064, while the sum is 28.

Adding to 22204213237 its reverse (73231240222), we get a palindrome (95435453459).

The spelling of 22204213237 in words is "twenty-two billion, two hundred four million, two hundred thirteen thousand, two hundred thirty-seven".