10221145 has 16 divisors (see below), whose sum is σ = 14086080. Its totient is φ = 7041600.

The previous prime is 10221091. The next prime is 10221149. The reversal of 10221145 is 54112201.

It is not a de Polignac number, because 10221145 - 2¹³ = 10212953 is a prime.

It is a super-2 number, since 2×10221145² = 208943610222050, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (10221149) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3846 + ... + 5935.

It is an arithmetic number, because the mean of its divisors is an integer number (880380).

Almost surely, 2^10221145 is an apocalyptic number.

It is an amenable number.

10221145 is a deficient number, since it is larger than the sum of its proper divisors (3864935).

10221145 is a wasteful number, since it uses less digits than its factorization.

10221145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9816.

The product of its (nonzero) digits is 80, while the sum is 16.

The square root of 10221145 is about 3197.0525488331. The cubic root of 10221145 is about 217.0200452930.

Adding to 10221145 its reverse (54112201), we get a palindrome (64333346).

The spelling of 10221145 in words is "ten million, two hundred twenty-one thousand, one hundred forty-five".