136273562221 has 2 divisors, whose sum is σ = 136273562222. Its totient is φ = 136273562220.

The previous prime is 136273562219. The next prime is 136273562233. The reversal of 136273562221 is 122265372631.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 76681917225 + 59591644996 = 276915^2 + 244114^2 .

It is a cyclic number.

It is not a de Polignac number, because 136273562221 - 2¹ = 136273562219 is a prime.

Together with 136273562219, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (136273562251) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 68136781110 + 68136781111.

It is an arithmetic number, because the mean of its divisors is an integer number (68136781111).

Almost surely, 2^136273562221 is an apocalyptic number.

It is an amenable number.

136273562221 is a deficient number, since it is larger than the sum of its proper divisors (1).

136273562221 is an equidigital number, since it uses as much as digits as its factorization.

136273562221 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 181440, while the sum is 40.

The spelling of 136273562221 in words is "one hundred thirty-six billion, two hundred seventy-three million, five hundred sixty-two thousand, two hundred twenty-one".