172201103 has 2 divisors, whose sum is σ = 172201104. Its totient is φ = 172201102.

The previous prime is 172201097. The next prime is 172201121. The reversal of 172201103 is 301102271.

It is a weak prime.

It is an emirp because it is prime and its reverse (301102271) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-172201103 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (172201163) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 86100551 + 86100552.

It is an arithmetic number, because the mean of its divisors is an integer number (86100552).

Almost surely, 2^172201103 is an apocalyptic number.

172201103 is a deficient number, since it is larger than the sum of its proper divisors (1).

172201103 is an equidigital number, since it uses as much as digits as its factorization.

172201103 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 84, while the sum is 17.

The square root of 172201103 is about 13122.5417888456. The cubic root of 172201103 is about 556.3464351930.

Adding to 172201103 its reverse (301102271), we get a palindrome (473303374).

The spelling of 172201103 in words is "one hundred seventy-two million, two hundred one thousand, one hundred three".