36221216 has 12 divisors (see below), whose sum is σ = 71310582. Its totient is φ = 18110592.

The previous prime is 36221209. The next prime is 36221219. The reversal of 36221216 is 61212263.

It can be written as a sum of positive squares in only one way, i.e., 23232400 + 12988816 = 4820^2 + 3604^2 .

It is a junction number, because it is equal to n+sod(n) for n = 36221191 and 36221200.

It is not an unprimeable number, because it can be changed into a prime (36221219) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 565925 + ... + 565988.

Almost surely, 2^36221216 is an apocalyptic number.

It is an amenable number.

36221216 is a deficient number, since it is larger than the sum of its proper divisors (35089366).

36221216 is a wasteful number, since it uses less digits than its factorization.

36221216 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1131923 (or 1131915 counting only the distinct ones).

The product of its digits is 864, while the sum is 23.

The square root of 36221216 is about 6018.4064336002. The cubic root of 36221216 is about 330.8676768055.

Adding to 36221216 its reverse (61212263), we get a palindrome (97433479).

The spelling of 36221216 in words is "thirty-six million, two hundred twenty-one thousand, two hundred sixteen".