136422217 has 2 divisors, whose sum is σ = 136422218. Its totient is φ = 136422216.

The previous prime is 136422197. The next prime is 136422259. The reversal of 136422217 is 712224631.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 136048896 + 373321 = 11664^2 + 611^2 .

It is a cyclic number.

It is not a de Polignac number, because 136422217 - 2⁷ = 136422089 is a prime.

It is a super-2 number, since 2×136422217² = 37222042582390178, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (136422017) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 68211108 + 68211109.

It is an arithmetic number, because the mean of its divisors is an integer number (68211109).

Almost surely, 2^136422217 is an apocalyptic number.

It is an amenable number.

136422217 is a deficient number, since it is larger than the sum of its proper divisors (1).

136422217 is an equidigital number, since it uses as much as digits as its factorization.

136422217 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4032, while the sum is 28.

The square root of 136422217 is about 11679.9921660933. The cubic root of 136422217 is about 514.7879442417.

Adding to 136422217 its reverse (712224631), we get a palindrome (848646848).

The spelling of 136422217 in words is "one hundred thirty-six million, four hundred twenty-two thousand, two hundred seventeen".