10221219 has 12 divisors (see below), whose sum is σ = 15015000. Its totient is φ = 6698304.

The previous prime is 10221203. The next prime is 10221247. The reversal of 10221219 is 91212201.

It is not a de Polignac number, because 10221219 - 2⁴ = 10221203 is a prime.

It is a super-2 number, since 2×10221219² = 208946635691922, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (10221619) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 9094 + ... + 10155.

It is an arithmetic number, because the mean of its divisors is an integer number (1251250).

Almost surely, 2^10221219 is an apocalyptic number.

10221219 is a deficient number, since it is larger than the sum of its proper divisors (4793781).

10221219 is a wasteful number, since it uses less digits than its factorization.

10221219 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19314 (or 19311 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 18.

The square root of 10221219 is about 3197.0641219719. The cubic root of 10221219 is about 217.0205690258.

It can be divided in two parts, 1022121 and 9, that multiplied together give a square (9199089 = 3033²).

The spelling of 10221219 in words is "ten million, two hundred twenty-one thousand, two hundred nineteen".