36015221 has 4 divisors (see below), whose sum is σ = 39289344. Its totient is φ = 32741100.

The previous prime is 36015191. The next prime is 36015223. The reversal of 36015221 is 12251063.

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 36015221 - 2¹⁸ = 35753077 is a prime.

It is a super-2 number, since 2×36015221² = 2594192287357682, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 36015193 and 36015202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (36015223) 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, 1637045 + ... + 1637066.

It is an arithmetic number, because the mean of its divisors is an integer number (9822336).

Almost surely, 2^36015221 is an apocalyptic number.

It is an amenable number.

36015221 is a deficient number, since it is larger than the sum of its proper divisors (3274123).

36015221 is a wasteful number, since it uses less digits than its factorization.

36015221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3274122.

The product of its (nonzero) digits is 360, while the sum is 20.

The square root of 36015221 is about 6001.2682826216. The cubic root of 36015221 is about 330.2392541053.

Adding to 36015221 its reverse (12251063), we get a palindrome (48266284).

The spelling of 36015221 in words is "thirty-six million, fifteen thousand, two hundred twenty-one".