36214221 has 4 divisors (see below), whose sum is σ = 48285632. Its totient is φ = 24142812.

The previous prime is 36214181. The next prime is 36214223. The reversal of 36214221 is 12241263.

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 not a de Polignac number, because 36214221 - 2⁷ = 36214093 is a prime.

It is a super-2 number, since 2×36214221² = 2622939605273682, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (36214223) 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, 6035701 + ... + 6035706.

It is an arithmetic number, because the mean of its divisors is an integer number (12071408).

Almost surely, 2^36214221 is an apocalyptic number.

It is an amenable number.

36214221 is a deficient number, since it is larger than the sum of its proper divisors (12071411).

36214221 is a wasteful number, since it uses less digits than its factorization.

36214221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12071410.

The product of its digits is 576, while the sum is 21.

The square root of 36214221 is about 6017.8252716409. The cubic root of 36214221 is about 330.8463765046.

Adding to 36214221 its reverse (12241263), we get a palindrome (48455484).

The spelling of 36214221 in words is "thirty-six million, two hundred fourteen thousand, two hundred twenty-one".