36221321 has 4 divisors (see below), whose sum is σ = 36271872. Its totient is φ = 36170772.

The previous prime is 36221303. The next prime is 36221329. The reversal of 36221321 is 12312263.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 36221321 - 2¹⁸ = 35959177 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 36221293 and 36221302.

It is not an unprimeable number, because it can be changed into a prime (36221329) 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, 24185 + ... + 25638.

It is an arithmetic number, because the mean of its divisors is an integer number (9067968).

Almost surely, 2^36221321 is an apocalyptic number.

It is an amenable number.

36221321 is a deficient number, since it is larger than the sum of its proper divisors (50551).

36221321 is an equidigital number, since it uses as much as digits as its factorization.

36221321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50550.

The product of its digits is 432, while the sum is 20.

The square root of 36221321 is about 6018.4151568332. The cubic root of 36221321 is about 330.8679965175.

Adding to 36221321 its reverse (12312263), we get a palindrome (48533584).

The spelling of 36221321 in words is "thirty-six million, two hundred twenty-one thousand, three hundred twenty-one".