10650221 has 8 divisors (see below), whose sum is σ = 11083800. Its totient is φ = 10221120.

The previous prime is 10650217. The next prime is 10650229. The reversal of 10650221 is 12205601.

It can be written as a sum of positive squares in 4 ways, for example, as 1716100 + 8934121 = 1310^2 + 2989^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 10650221 - 2² = 10650217 is a prime.

It is a super-2 number, since 2×10650221² = 226854414697682, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 10650221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10650229) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4235 + ... + 6263.

It is an arithmetic number, because the mean of its divisors is an integer number (1385475).

Almost surely, 2^10650221 is an apocalyptic number.

It is an amenable number.

10650221 is a deficient number, since it is larger than the sum of its proper divisors (433579).

10650221 is a wasteful number, since it uses less digits than its factorization.

10650221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2239.

The product of its (nonzero) digits is 120, while the sum is 17.

The square root of 10650221 is about 3263.4676342811. The cubic root of 10650221 is about 220.0152950799.

Adding to 10650221 its reverse (12205601), we get a palindrome (22855822).

The spelling of 10650221 in words is "ten million, six hundred fifty thousand, two hundred twenty-one".