102201109 has 2 divisors, whose sum is σ = 102201110. Its totient is φ = 102201108.

The previous prime is 102201101. The next prime is 102201149. The reversal of 102201109 is 901102201.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 99560484 + 2640625 = 9978^2 + 1625^2 .

It is a cyclic number.

It is not a de Polignac number, because 102201109 - 2³ = 102201101 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 102201092 and 102201101.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (102201101) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 51100554 + 51100555.

It is an arithmetic number, because the mean of its divisors is an integer number (51100555).

Almost surely, 2^102201109 is an apocalyptic number.

It is an amenable number.

102201109 is a deficient number, since it is larger than the sum of its proper divisors (1).

102201109 is an equidigital number, since it uses as much as digits as its factorization.

102201109 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 36, while the sum is 16.

The square root of 102201109 is about 10109.4564146644. The cubic root of 102201109 is about 467.5397455413.

The spelling of 102201109 in words is "one hundred two million, two hundred one thousand, one hundred nine".