108597221 has 2 divisors, whose sum is σ = 108597222. Its totient is φ = 108597220.

The previous prime is 108597211. The next prime is 108597253. The reversal of 108597221 is 122795801.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 57988225 + 50608996 = 7615^2 + 7114^2 .

It is a cyclic number.

It is not a de Polignac number, because 108597221 - 2¹⁴ = 108580837 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (108597211) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 54298610 + 54298611.

It is an arithmetic number, because the mean of its divisors is an integer number (54298611).

Almost surely, 2^108597221 is an apocalyptic number.

It is an amenable number.

108597221 is a deficient number, since it is larger than the sum of its proper divisors (1).

108597221 is an equidigital number, since it uses as much as digits as its factorization.

108597221 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 10080, while the sum is 35.

The square root of 108597221 is about 10420.9990403991. Note that the first 3 decimals coincide. The cubic root of 108597221 is about 477.0965073628.

The spelling of 108597221 in words is "one hundred eight million, five hundred ninety-seven thousand, two hundred twenty-one".