105502221 has 24 divisors (see below), whose sum is σ = 176027904. Its totient is φ = 60178560.

The previous prime is 105502151. The next prime is 105502247. The reversal of 105502221 is 122205501.

It is not a de Polignac number, because 105502221 - 2⁷ = 105502093 is a prime.

It is a super-2 number, since 2×105502221² = 22261437271865682, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 105502194 and 105502203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (105502121) 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 in 23 ways as a sum of consecutive naturals, for example, 29661 + ... + 33026.

It is an arithmetic number, because the mean of its divisors is an integer number (7334496).

Almost surely, 2^105502221 is an apocalyptic number.

105502221 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

105502221 is a deficient number, since it is larger than the sum of its proper divisors (70525683).

105502221 is a wasteful number, since it uses less digits than its factorization.

105502221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 62721 (or 62718 counting only the distinct ones).

The product of its (nonzero) digits is 200, while the sum is 18.

The square root of 105502221 is about 10271.4274081064. The cubic root of 105502221 is about 472.5203686525.

Adding to 105502221 its reverse (122205501), we get a palindrome (227707722).

The spelling of 105502221 in words is "one hundred five million, five hundred two thousand, two hundred twenty-one".