136513301202221 has 8 divisors (see below), whose sum is σ = 140917092378624. Its totient is φ = 132109518544560.

The previous prime is 136513301202199. The next prime is 136513301202227. The reversal of 136513301202221 is 122202103315631.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-136513301202221 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (136513301202227) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 53517380 + ... + 56010146.

It is an arithmetic number, because the mean of its divisors is an integer number (17614636547328).

Almost surely, 2^{136513301202221} is an apocalyptic number.

It is an amenable number.

136513301202221 is a deficient number, since it is larger than the sum of its proper divisors (4403791176403).

136513301202221 is a wasteful number, since it uses less digits than its factorization.

136513301202221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4259371.

The product of its (nonzero) digits is 12960, while the sum is 32.

Adding to 136513301202221 its reverse (122202103315631), we get a palindrome (258715404517852).

The spelling of 136513301202221 in words is "one hundred thirty-six trillion, five hundred thirteen billion, three hundred one million, two hundred two thousand, two hundred twenty-one".