136223201 has 2 divisors, whose sum is σ = 136223202. Its totient is φ = 136223200.

The previous prime is 136223189. The next prime is 136223203. The reversal of 136223201 is 102322631.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 94556176 + 41667025 = 9724^2 + 6455^2 .

It is an emirp because it is prime and its reverse (102322631) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 136223201 - 2⁶ = 136223137 is a prime.

Together with 136223203, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (136223203) 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, 68111600 + 68111601.

It is an arithmetic number, because the mean of its divisors is an integer number (68111601).

Almost surely, 2^136223201 is an apocalyptic number.

It is an amenable number.

136223201 is a deficient number, since it is larger than the sum of its proper divisors (1).

136223201 is an equidigital number, since it uses as much as digits as its factorization.

136223201 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 432, while the sum is 20.

The square root of 136223201 is about 11671.4695304405. The cubic root of 136223201 is about 514.5374940840.

Adding to 136223201 its reverse (102322631), we get a palindrome (238545832).

The spelling of 136223201 in words is "one hundred thirty-six million, two hundred twenty-three thousand, two hundred one".