10039221 has 10 divisors (see below), whose sum is σ = 14996982. Its totient is φ = 6692760.

The previous prime is 10039217. The next prime is 10039243. The reversal of 10039221 is 12293001.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 9696996 + 342225 = 3114^2 + 585^2 .

It is not a de Polignac number, because 10039221 - 2² = 10039217 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 10039194 and 10039203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10039291) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 61890 + ... + 62051.

Almost surely, 2^10039221 is an apocalyptic number.

It is an amenable number.

10039221 is a deficient number, since it is larger than the sum of its proper divisors (4957761).

10039221 is an equidigital number, since it uses as much as digits as its factorization.

10039221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 123953 (or 123944 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 18.

The square root of 10039221 is about 3168.4729760564. The cubic root of 10039221 is about 215.7247651758.

The spelling of 10039221 in words is "ten million, thirty-nine thousand, two hundred twenty-one".