10021271 has 4 divisors (see below), whose sum is σ = 10792152. Its totient is φ = 9250392.

The previous prime is 10021267. The next prime is 10021283. The reversal of 10021271 is 17212001.

10021271 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 10021271 - 2² = 10021267 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10021241) 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 3 ways as a sum of consecutive naturals, for example, 385421 + ... + 385446.

It is an arithmetic number, because the mean of its divisors is an integer number (2698038).

Almost surely, 2^10021271 is an apocalyptic number.

10021271 is a deficient number, since it is larger than the sum of its proper divisors (770881).

10021271 is an equidigital number, since it uses as much as digits as its factorization.

10021271 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 770880.

The product of its (nonzero) digits is 28, while the sum is 14.

The square root of 10021271 is about 3165.6391139863. The cubic root of 10021271 is about 215.5961174224.

Adding to 10021271 its reverse (17212001), we get a palindrome (27233272).

The spelling of 10021271 in words is "ten million, twenty-one thousand, two hundred seventy-one".