22236013 has 2 divisors, whose sum is σ = 22236014. Its totient is φ = 22236012.

The previous prime is 22235987. The next prime is 22236037. The reversal of 22236013 is 31063222.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 15976009 + 6260004 = 3997^2 + 2502^2 .

It is a cyclic number.

It is not a de Polignac number, because 22236013 - 2⁹ = 22235501 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22236073) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11118006 + 11118007.

It is an arithmetic number, because the mean of its divisors is an integer number (11118007).

Almost surely, 2^22236013 is an apocalyptic number.

It is an amenable number.

22236013 is a deficient number, since it is larger than the sum of its proper divisors (1).

22236013 is an equidigital number, since it uses as much as digits as its factorization.

22236013 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 432, while the sum is 19.

The square root of 22236013 is about 4715.5077139159. The cubic root of 22236013 is about 281.2023677030.

Adding to 22236013 its reverse (31063222), we get a palindrome (53299235).

The spelling of 22236013 in words is "twenty-two million, two hundred thirty-six thousand, thirteen".