136052221 has 2 divisors, whose sum is σ = 136052222. Its totient is φ = 136052220.

The previous prime is 136052209. The next prime is 136052239. The reversal of 136052221 is 122250631.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 97239321 + 38812900 = 9861^2 + 6230^2 .

It is a cyclic number.

It is not a de Polignac number, because 136052221 - 2⁷ = 136052093 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 136052192 and 136052201.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (136052261) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 68026110 + 68026111.

It is an arithmetic number, because the mean of its divisors is an integer number (68026111).

Almost surely, 2^136052221 is an apocalyptic number.

It is an amenable number.

136052221 is a deficient number, since it is larger than the sum of its proper divisors (1).

136052221 is an equidigital number, since it uses as much as digits as its factorization.

136052221 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 136052221 is about 11664.1425317080. The cubic root of 136052221 is about 514.3221307363.

The spelling of 136052221 in words is "one hundred thirty-six million, fifty-two thousand, two hundred twenty-one".