10221858 has 12 divisors (see below), whose sum is σ = 22147398. Its totient is φ = 3407280.

The previous prime is 10221853. The next prime is 10221863. The reversal of 10221858 is 85812201.

It is an interprime number because it is at equal distance from previous prime (10221853) and next prime (10221863).

It can be written as a sum of positive squares in only one way, i.e., 8139609 + 2082249 = 2853^2 + 1443^2 .

It is not an unprimeable number, because it can be changed into a prime (10221853) 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 5 ways as a sum of consecutive naturals, for example, 283923 + ... + 283958.

Almost surely, 2^10221858 is an apocalyptic number.

10221858 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

10221858 is an abundant number, since it is smaller than the sum of its proper divisors (11925540).

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

10221858 is a wasteful number, since it uses less digits than its factorization.

10221858 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 567889 (or 567886 counting only the distinct ones).

The product of its (nonzero) digits is 1280, while the sum is 27.

The square root of 10221858 is about 3197.1640558470. The cubic root of 10221858 is about 217.0250914235.

The spelling of 10221858 in words is "ten million, two hundred twenty-one thousand, eight hundred fifty-eight".