136221336268 has 12 divisors (see below), whose sum is σ = 241065848520. Its totient is φ = 67345379552.

The previous prime is 136221336217. The next prime is 136221336289. The reversal of 136221336268 is 862633122631.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 191321746 + ... + 191322457.

It is an arithmetic number, because the mean of its divisors is an integer number (20088820710).

Almost surely, 2^136221336268 is an apocalyptic number.

It is an amenable number.

136221336268 is a deficient number, since it is larger than the sum of its proper divisors (104844512252).

136221336268 is a wasteful number, since it uses less digits than its factorization.

136221336268 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 382644296 (or 382644294 counting only the distinct ones).

The product of its digits is 373248, while the sum is 43.

Adding to 136221336268 its reverse (862633122631), we get a palindrome (998854458899).

The spelling of 136221336268 in words is "one hundred thirty-six billion, two hundred twenty-one million, three hundred thirty-six thousand, two hundred sixty-eight".