105221125 has 16 divisors (see below), whose sum is σ = 132560064. Its totient is φ = 83379600.

The previous prime is 105221117. The next prime is 105221141. The reversal of 105221125 is 521122501.

It is not a de Polignac number, because 105221125 - 2³ = 105221117 is a prime.

It is a super-2 number, since 2×105221125² = 22142970292531250, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9442 + ... + 17308.

It is an arithmetic number, because the mean of its divisors is an integer number (8285004).

Almost surely, 2^105221125 is an apocalyptic number.

It is an amenable number.

105221125 is a deficient number, since it is larger than the sum of its proper divisors (27338939).

105221125 is an equidigital number, since it uses as much as digits as its factorization.

105221125 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7989 (or 7979 counting only the distinct ones).

The product of its (nonzero) digits is 200, while the sum is 19.

The square root of 105221125 is about 10257.7348864162. The cubic root of 105221125 is about 472.1003404529.

Adding to 105221125 its reverse (521122501), we get a palindrome (626343626).

The spelling of 105221125 in words is "one hundred five million, two hundred twenty-one thousand, one hundred twenty-five".