10669221 has 6 divisors (see below), whose sum is σ = 15411110. Its totient is φ = 7112808.

The previous prime is 10669213. The next prime is 10669259. The reversal of 10669221 is 12296601.

It can be written as a sum of positive squares in only one way, i.e., 9641025 + 1028196 = 3105^2 + 1014^2 .

It is not a de Polignac number, because 10669221 - 2³ = 10669213 is a prime.

It is a super-2 number, since 2×10669221² = 227664553493682, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10669721) 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 5 ways as a sum of consecutive naturals, for example, 592726 + ... + 592743.

Almost surely, 2^10669221 is an apocalyptic number.

It is an amenable number.

10669221 is a deficient number, since it is larger than the sum of its proper divisors (4741889).

10669221 is a wasteful number, since it uses less digits than its factorization.

10669221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1185475 (or 1185472 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 27.

The square root of 10669221 is about 3266.3773511338. The cubic root of 10669221 is about 220.1460531548.

The spelling of 10669221 in words is "ten million, six hundred sixty-nine thousand, two hundred twenty-one".