102197205 has 54 divisors (see below), whose sum is σ = 196141218. Its totient is φ = 49188480.

The previous prime is 102197203. The next prime is 102197209. The reversal of 102197205 is 502791201.

It can be written as a sum of positive squares in 3 ways, for example, as 16208676 + 85988529 = 4026^2 + 9273^2 .

It is not a de Polignac number, because 102197205 - 2¹ = 102197203 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102197203) by changing a digit.

It is a polite number, since it can be written in 53 ways as a sum of consecutive naturals, for example, 745897 + ... + 746033.

Almost surely, 2^102197205 is an apocalyptic number.

102197205 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

102197205 is a deficient number, since it is larger than the sum of its proper divisors (93944013).

102197205 is a wasteful number, since it uses less digits than its factorization.

102197205 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 307 (or 156 counting only the distinct ones).

The product of its (nonzero) digits is 1260, while the sum is 27.

The square root of 102197205 is about 10109.2633262765. The cubic root of 102197205 is about 467.5337922517.

It can be divided in two parts, 10219 and 7205, that added together give a square (17424 = 132²).

The spelling of 102197205 in words is "one hundred two million, one hundred ninety-seven thousand, two hundred five".