141221636 has 12 divisors (see below), whose sum is σ = 248124240. Its totient is φ = 70329000.

The previous prime is 141221611. The next prime is 141221653. The reversal of 141221636 is 636122141.

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 3 ways as a sum of consecutive naturals, for example, 69326 + ... + 71333.

It is an arithmetic number, because the mean of its divisors is an integer number (20677020).

Almost surely, 2^141221636 is an apocalyptic number.

It is an amenable number.

141221636 is a deficient number, since it is larger than the sum of its proper divisors (106902604).

141221636 is a wasteful number, since it uses less digits than its factorization.

141221636 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 140914 (or 140912 counting only the distinct ones).

The product of its digits is 1728, while the sum is 26.

The square root of 141221636 is about 11883.6709816454. The cubic root of 141221636 is about 520.7553568654.

Adding to 141221636 its reverse (636122141), we get a palindrome (777343777).

The spelling of 141221636 in words is "one hundred forty-one million, two hundred twenty-one thousand, six hundred thirty-six".