36221 has 4 divisors (see below), whose sum is σ = 37500. Its totient is φ = 34944.

The previous prime is 36217. The next prime is 36229. The reversal of 36221 is 12263.

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 16900 + 19321 = 130^2 + 139^2 .

It is a cyclic number.

It is not a de Polignac number, because 36221 - 2² = 36217 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 36196 and 36205.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 36221.

It is not an unprimeable number, because it can be changed into a prime (36229) 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, 596 + ... + 653.

It is an arithmetic number, because the mean of its divisors is an integer number (9375).

2³⁶²²¹ is an apocalyptic number.

It is an amenable number.

36221 is a deficient number, since it is larger than the sum of its proper divisors (1279).

36221 is a wasteful number, since it uses less digits than its factorization.

36221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1278.

The product of its digits is 72, while the sum is 14.

The square root of 36221 is about 190.3181546779. The cubic root of 36221 is about 33.0867019110.

Adding to 36221 its reverse (12263), we get a palindrome (48484).

It can be divided in two parts, 362 and 21, that added together give a palindrome (383).

The spelling of 36221 in words is "thirty-six thousand, two hundred twenty-one".