10221505 has 32 divisors (see below), whose sum is σ = 15240960. Its totient is φ = 6420480.

The previous prime is 10221481. The next prime is 10221511. The reversal of 10221505 is 50512201.

It is not a de Polignac number, because 10221505 - 2⁷ = 10221377 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 24186 + ... + 24604.

It is an arithmetic number, because the mean of its divisors is an integer number (476280).

Almost surely, 2^10221505 is an apocalyptic number.

It is an amenable number.

10221505 is a deficient number, since it is larger than the sum of its proper divisors (5019455).

10221505 is a wasteful number, since it uses less digits than its factorization.

10221505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 489.

The product of its (nonzero) digits is 100, while the sum is 16.

The square root of 10221505 is about 3197.1088501958. The cubic root of 10221505 is about 217.0225931582.

Adding to 10221505 its reverse (50512201), we get a palindrome (60733706).

The spelling of 10221505 in words is "ten million, two hundred twenty-one thousand, five hundred five".