22500229 has 2 divisors, whose sum is σ = 22500230. Its totient is φ = 22500228.

The previous prime is 22500211. The next prime is 22500239. The reversal of 22500229 is 92200522.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 22071204 + 429025 = 4698^2 + 655^2 .

It is a cyclic number.

It is not a de Polignac number, because 22500229 - 2⁹ = 22499717 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22500239) 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, 11250114 + 11250115.

It is an arithmetic number, because the mean of its divisors is an integer number (11250115).

Almost surely, 2^22500229 is an apocalyptic number.

It is an amenable number.

22500229 is a deficient number, since it is larger than the sum of its proper divisors (1).

22500229 is an equidigital number, since it uses as much as digits as its factorization.

22500229 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 720, while the sum is 22.

The square root of 22500229 is about 4743.4406289106. The cubic root of 22500229 is about 282.3117664266.

The spelling of 22500229 in words is "twenty-two million, five hundred thousand, two hundred twenty-nine".