36212121 has 12 divisors (see below), whose sum is σ = 57061680. Its totient is φ = 21946680.

The previous prime is 36212087. The next prime is 36212129. The reversal of 36212121 is 12121263.

36212121 is a `hidden beast` number, since 3 + 621 + 21 + 21 = 666.

It is not a de Polignac number, because 36212121 - 2⁷ = 36211993 is a prime.

It is a super-2 number, since 2×36212121² = 2622635414637282, which contains 22 as substring.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 36212094 and 36212103.

It is not an unprimeable number, because it can be changed into a prime (36212129) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 182791 + ... + 182988.

It is an arithmetic number, because the mean of its divisors is an integer number (4755140).

Almost surely, 2^36212121 is an apocalyptic number.

It is an amenable number.

36212121 is a deficient number, since it is larger than the sum of its proper divisors (20849559).

36212121 is a wasteful number, since it uses less digits than its factorization.

36212121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 365796 (or 365793 counting only the distinct ones).

The product of its digits is 144, while the sum is 18.

The square root of 36212121 is about 6017.6507874751. The cubic root of 36212121 is about 330.8399813114.

Adding to 36212121 its reverse (12121263), we get a palindrome (48333384).

The spelling of 36212121 in words is "thirty-six million, two hundred twelve thousand, one hundred twenty-one".