136102221 has 16 divisors (see below), whose sum is σ = 213494400. Its totient is φ = 85397184.

The previous prime is 136102199. The next prime is 136102223. The reversal of 136102221 is 122201631.

136102221 = T₃₉₉₃ + T₃₉₉₄ + ... + T₄₀₀₉.

136102221 is a `hidden beast` number, since 13 + 610 + 22 + 21 = 666.

It is not a de Polignac number, because 136102221 - 2¹⁰ = 136101197 is a prime.

It is a super-2 number, since 2×136102221² = 37047629122265682, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 136102194 and 136102203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (136102223) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 147801 + ... + 148718.

It is an arithmetic number, because the mean of its divisors is an integer number (13343400).

Almost surely, 2^136102221 is an apocalyptic number.

It is an amenable number.

136102221 is a deficient number, since it is larger than the sum of its proper divisors (77392179).

136102221 is a wasteful number, since it uses less digits than its factorization.

136102221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 296545 (or 296539 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

The square root of 136102221 is about 11666.2856556832. The cubic root of 136102221 is about 514.3851284997.

Adding to 136102221 its reverse (122201631), we get a palindrome (258303852).

The spelling of 136102221 in words is "one hundred thirty-six million, one hundred two thousand, two hundred twenty-one".