136121210 has 32 divisors (see below), whose sum is σ = 260096832. Its totient is φ = 51114240.

The previous prime is 136121203. The next prime is 136121239. The reversal of 136121210 is 12121631.

It is a Harshad number since it is a multiple of its sum of digits (17).

It is an unprimeable number.

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, 88145 + ... + 89675.

It is an arithmetic number, because the mean of its divisors is an integer number (8128026).

Almost surely, 2^136121210 is an apocalyptic number.

136121210 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

136121210 is a deficient number, since it is larger than the sum of its proper divisors (123975622).

136121210 is a wasteful number, since it uses less digits than its factorization.

136121210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2078.

The product of its (nonzero) digits is 72, while the sum is 17.

The square root of 136121210 is about 11667.0994681626. The cubic root of 136121210 is about 514.4090497478.

Adding to 136121210 its reverse (12121631), we get a palindrome (148242841).

The spelling of 136121210 in words is "one hundred thirty-six million, one hundred twenty-one thousand, two hundred ten".