136049221 has 16 divisors (see below), whose sum is σ = 172500480. Its totient is φ = 104212080.

The previous prime is 136049203. The next prime is 136049231. The reversal of 136049221 is 122940631.

It is not a de Polignac number, because 136049221 - 2⁵ = 136049189 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 136049221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (136049231) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10431 + ... + 19516.

It is an arithmetic number, because the mean of its divisors is an integer number (10781280).

Almost surely, 2^136049221 is an apocalyptic number.

136049221 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

136049221 is a deficient number, since it is larger than the sum of its proper divisors (36451259).

136049221 is a wasteful number, since it uses less digits than its factorization.

136049221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30024.

The product of its (nonzero) digits is 2592, while the sum is 28.

The square root of 136049221 is about 11664.0139317475. The cubic root of 136049221 is about 514.3183503797.

Adding to 136049221 its reverse (122940631), we get a palindrome (258989852).

The spelling of 136049221 in words is "one hundred thirty-six million, forty-nine thousand, two hundred twenty-one".