102130225 has 24 divisors (see below), whose sum is σ = 134435840. Its totient is φ = 76749120.

The previous prime is 102130219. The next prime is 102130229. The reversal of 102130225 is 522031201.

It is a de Polignac number, because none of the positive numbers 2^k-102130225 is a prime.

It is a super-3 number, since 3×102130225³ (a number of 25 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 102130199 and 102130208.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102130229) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 59479 + ... + 61171.

Almost surely, 2^102130225 is an apocalyptic number.

It is an amenable number.

102130225 is a deficient number, since it is larger than the sum of its proper divisors (32305615).

102130225 is a wasteful number, since it uses less digits than its factorization.

102130225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1849 (or 1844 counting only the distinct ones).

The product of its (nonzero) digits is 120, while the sum is 16.

The square root of 102130225 is about 10105.9499800860. The cubic root of 102130225 is about 467.4316294536.

Adding to 102130225 its reverse (522031201), we get a palindrome (624161426).

The spelling of 102130225 in words is "one hundred two million, one hundred thirty thousand, two hundred twenty-five".