10221386 has 32 divisors (see below), whose sum is σ = 18859392. Its totient is φ = 4055040.

The previous prime is 10221377. The next prime is 10221391. The reversal of 10221386 is 68312201.

10221386 is a modest number, since divided by 1386 gives 1022 as remainder.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 15626 + ... + 16266.

It is an arithmetic number, because the mean of its divisors is an integer number (589356).

Almost surely, 2^10221386 is an apocalyptic number.

10221386 is a deficient number, since it is larger than the sum of its proper divisors (8638006).

10221386 is a wasteful number, since it uses less digits than its factorization.

10221386 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 734.

The product of its (nonzero) digits is 576, while the sum is 23.

The square root of 10221386 is about 3197.0902395772. The cubic root of 10221386 is about 217.0217509539.

Adding to 10221386 its reverse (68312201), we get a palindrome (78533587).

The spelling of 10221386 in words is "ten million, two hundred twenty-one thousand, three hundred eighty-six".