36430224221 has 2 divisors, whose sum is σ = 36430224222. Its totient is φ = 36430224220.

The previous prime is 36430224197. The next prime is 36430224223. The reversal of 36430224221 is 12242203463.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 33907171321 + 2523052900 = 184139^2 + 50230^2 .

It is a cyclic number.

It is not a de Polignac number, because 36430224221 - 2⁶ = 36430224157 is a prime.

It is a super-2 number, since 2×36430224221² (a number of 22 digits) contains 22 as substring.

It is a Sophie Germain prime.

Together with 36430224223, it forms a pair of twin primes.

It is a Chen prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (36430224223) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 18215112110 + 18215112111.

It is an arithmetic number, because the mean of its divisors is an integer number (18215112111).

Almost surely, 2^36430224221 is an apocalyptic number.

It is an amenable number.

36430224221 is a deficient number, since it is larger than the sum of its proper divisors (1).

36430224221 is an equidigital number, since it uses as much as digits as its factorization.

36430224221 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 13824, while the sum is 29.

Adding to 36430224221 its reverse (12242203463), we get a palindrome (48672427684).

The spelling of 36430224221 in words is "thirty-six billion, four hundred thirty million, two hundred twenty-four thousand, two hundred twenty-one".