136221301 has 2 divisors, whose sum is σ = 136221302. Its totient is φ = 136221300.

The previous prime is 136221287. The next prime is 136221401. The reversal of 136221301 is 103122631.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 100520676 + 35700625 = 10026^2 + 5975^2 .

It is an emirp because it is prime and its reverse (103122631) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 136221301 - 2⁵ = 136221269 is a prime.

It is a super-2 number, since 2×136221301² = 37112485692265202, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (136221401) 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, 68110650 + 68110651.

It is an arithmetic number, because the mean of its divisors is an integer number (68110651).

Almost surely, 2^136221301 is an apocalyptic number.

It is an amenable number.

136221301 is a deficient number, since it is larger than the sum of its proper divisors (1).

136221301 is an equidigital number, since it uses as much as digits as its factorization.

136221301 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 216, while the sum is 19.

The square root of 136221301 is about 11671.3881350934. The cubic root of 136221301 is about 514.5351018685.

Adding to 136221301 its reverse (103122631), we get a palindrome (239343932).

The spelling of 136221301 in words is "one hundred thirty-six million, two hundred twenty-one thousand, three hundred one".