10221258 has 32 divisors (see below), whose sum is σ = 21288960. Its totient is φ = 3268080.

The previous prime is 10221247. The next prime is 10221283. The reversal of 10221258 is 85212201.

It is a happy number.

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, 33141 + ... + 33447.

It is an arithmetic number, because the mean of its divisors is an integer number (665280).

Almost surely, 2^10221258 is an apocalyptic number.

10221258 is an abundant number, since it is smaller than the sum of its proper divisors (11067702).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

10221258 is a wasteful number, since it uses less digits than its factorization.

10221258 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 522.

The product of its (nonzero) digits is 320, while the sum is 21.

The square root of 10221258 is about 3197.0702213120. The cubic root of 10221258 is about 217.0208450461.

Adding to 10221258 its reverse (85212201), we get a palindrome (95433459).

The spelling of 10221258 in words is "ten million, two hundred twenty-one thousand, two hundred fifty-eight".