10021158 has 40 divisors (see below), whose sum is σ = 25665552. Its totient is φ = 2862864.

The previous prime is 10021157. The next prime is 10021163. The reversal of 10021158 is 85112001.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a self number, because there is not a number n which added to its sum of digits gives 10021158.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10021157) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 3285 + ... + 5552.

Almost surely, 2^10021158 is an apocalyptic number.

10021158 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

10021158 is an abundant number, since it is smaller than the sum of its proper divisors (15644394).

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

10021158 is an equidigital number, since it uses as much as digits as its factorization.

10021158 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8858 (or 8849 counting only the distinct ones).

The product of its (nonzero) digits is 80, while the sum is 18.

The square root of 10021158 is about 3165.6212660393. The cubic root of 10021158 is about 215.5953070644.

Adding to 10021158 its reverse (85112001), we get a palindrome (95133159).

The spelling of 10021158 in words is "ten million, twenty-one thousand, one hundred fifty-eight".