10138221 has 12 divisors (see below), whose sum is σ = 14757600. Its totient is φ = 6706440.

The previous prime is 10138217. The next prime is 10138231. The reversal of 10138221 is 12283101.

It is not a de Polignac number, because 10138221 - 2² = 10138217 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 10138194 and 10138203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10138231) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3121 + ... + 5478.

It is an arithmetic number, because the mean of its divisors is an integer number (1229800).

Almost surely, 2^10138221 is an apocalyptic number.

It is an amenable number.

10138221 is a deficient number, since it is larger than the sum of its proper divisors (4619379).

10138221 is a wasteful number, since it uses less digits than its factorization.

10138221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8736 (or 8733 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 18.

The square root of 10138221 is about 3184.0573173233. The cubic root of 10138221 is about 216.4315574625.

The spelling of 10138221 in words is "ten million, one hundred thirty-eight thousand, two hundred twenty-one".