10281021 has 8 divisors (see below), whose sum is σ = 13790784. Its totient is φ = 6812640.

The previous prime is 10281017. The next prime is 10281041. The reversal of 10281021 is 12018201.

10281021 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 10281021 - 2² = 10281017 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10281041) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9760 + ... + 10761.

It is an arithmetic number, because the mean of its divisors is an integer number (1723848).

Almost surely, 2^10281021 is an apocalyptic number.

It is an amenable number.

10281021 is a deficient number, since it is larger than the sum of its proper divisors (3509763).

10281021 is a wasteful number, since it uses less digits than its factorization.

10281021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20691.

The product of its (nonzero) digits is 32, while the sum is 15.

The square root of 10281021 is about 3206.4031249985. The cubic root of 10281021 is about 217.4429920615.

Adding to 10281021 its reverse (12018201), we get a palindrome (22299222).

It can be divided in two parts, 102810 and 21, that added together give a triangular number (102831 = T₄₅₃).

The spelling of 10281021 in words is "ten million, two hundred eighty-one thousand, twenty-one".