136104221 has 16 divisors (see below), whose sum is σ = 154180800. Its totient is φ = 119011200.

The previous prime is 136104203. The next prime is 136104251. The reversal of 136104221 is 122401631.

It is not a de Polignac number, because 136104221 - 2²⁶ = 68995357 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 136104193 and 136104202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (136104251) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 104945 + ... + 106233.

It is an arithmetic number, because the mean of its divisors is an integer number (9636300).

Almost surely, 2^136104221 is an apocalyptic number.

136104221 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

136104221 is a deficient number, since it is larger than the sum of its proper divisors (18076579).

136104221 is a wasteful number, since it uses less digits than its factorization.

136104221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1660.

The product of its (nonzero) digits is 288, while the sum is 20.

The square root of 136104221 is about 11666.3713724534. The cubic root of 136104221 is about 514.3876480893.

Adding to 136104221 its reverse (122401631), we get a palindrome (258505852).

The spelling of 136104221 in words is "one hundred thirty-six million, one hundred four thousand, two hundred twenty-one".