36321245221 has 4 divisors (see below), whose sum is σ = 36437287852. Its totient is φ = 36205202592.

The previous prime is 36321245209. The next prime is 36321245243. The reversal of 36321245221 is 12254212363.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 982509025 + 35338736196 = 31345^2 + 187986^2 .

It is a cyclic number.

It is not a de Polignac number, because 36321245221 - 2¹¹ = 36321243173 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 (36321245251) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 58020846 + ... + 58021471.

It is an arithmetic number, because the mean of its divisors is an integer number (9109321963).

Almost surely, 2^36321245221 is an apocalyptic number.

It is an amenable number.

36321245221 is a deficient number, since it is larger than the sum of its proper divisors (116042631).

36321245221 is a wasteful number, since it uses less digits than its factorization.

36321245221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 116042630.

The product of its digits is 17280, while the sum is 31.

Adding to 36321245221 its reverse (12254212363), we get a palindrome (48575457584).

The spelling of 36321245221 in words is "thirty-six billion, three hundred twenty-one million, two hundred forty-five thousand, two hundred twenty-one".