36342221 has 2 divisors, whose sum is σ = 36342222. Its totient is φ = 36342220.

The previous prime is 36342217. The next prime is 36342239. The reversal of 36342221 is 12224363.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 33062500 + 3279721 = 5750^2 + 1811^2 .

It is a cyclic number.

It is not a de Polignac number, because 36342221 - 2² = 36342217 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (36342281) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 18171110 + 18171111.

It is an arithmetic number, because the mean of its divisors is an integer number (18171111).

Almost surely, 2^36342221 is an apocalyptic number.

It is an amenable number.

36342221 is a deficient number, since it is larger than the sum of its proper divisors (1).

36342221 is an equidigital number, since it uses as much as digits as its factorization.

36342221 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1728, while the sum is 23.

The square root of 36342221 is about 6028.4509618973. The cubic root of 36342221 is about 331.2357128761.

Adding to 36342221 its reverse (12224363), we get a palindrome (48566584).

It can be divided in two parts, 36342 and 221, that added together give a palindrome (36563).

The spelling of 36342221 in words is "thirty-six million, three hundred forty-two thousand, two hundred twenty-one".