36213021 has 16 divisors (see below), whose sum is σ = 57776320. Its totient is φ = 22284720.

The previous prime is 36213011. The next prime is 36213029. The reversal of 36213021 is 12031263.

36213021 is a `hidden beast` number, since 362 + 1 + 302 + 1 = 666.

It is not a de Polignac number, because 36213021 - 2⁵ = 36212989 is a prime.

It is a super-2 number, since 2×36213021² = 2622765779892882, 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 = 36212985 and 36213003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (36213029) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 51235 + ... + 51936.

It is an arithmetic number, because the mean of its divisors is an integer number (3611020).

Almost surely, 2^36213021 is an apocalyptic number.

It is an amenable number.

36213021 is a deficient number, since it is larger than the sum of its proper divisors (21563299).

36213021 is a wasteful number, since it uses less digits than its factorization.

36213021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 103193 (or 103187 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 18.

The square root of 36213021 is about 6017.7255670228. The cubic root of 36213021 is about 330.8427221387.

Adding to 36213021 its reverse (12031263), we get a palindrome (48244284).

The spelling of 36213021 in words is "thirty-six million, two hundred thirteen thousand, twenty-one".