36223021 has 2 divisors, whose sum is σ = 36223022. Its totient is φ = 36223020.

The previous prime is 36223007. The next prime is 36223027. The reversal of 36223021 is 12032263.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 24147396 + 12075625 = 4914^2 + 3475^2 .

It is a cyclic number.

It is not a de Polignac number, because 36223021 - 2⁹ = 36222509 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 36223021.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (36223027) 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 as a sum of consecutive naturals, namely, 18111510 + 18111511.

It is an arithmetic number, because the mean of its divisors is an integer number (18111511).

Almost surely, 2^36223021 is an apocalyptic number.

It is an amenable number.

36223021 is a deficient number, since it is larger than the sum of its proper divisors (1).

36223021 is an equidigital number, since it uses as much as digits as its factorization.

36223021 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 432, while the sum is 19.

The square root of 36223021 is about 6018.5563883709. The cubic root of 36223021 is about 330.8731727211.

Adding to 36223021 its reverse (12032263), we get a palindrome (48255284).

The spelling of 36223021 in words is "thirty-six million, two hundred twenty-three thousand, twenty-one".