10220281 has 4 divisors (see below), whose sum is σ = 10821492. Its totient is φ = 9619072.

The previous prime is 10220279. The next prime is 10220299. The reversal of 10220281 is 18202201.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 18202201 = 43 ⋅423307.

It can be written as a sum of positive squares in 2 ways, for example, as 6456681 + 3763600 = 2541^2 + 1940^2 .

It is a cyclic number.

It is not a de Polignac number, because 10220281 - 2¹ = 10220279 is a prime.

It is a super-2 number, since 2×10220281² = 208908287437922, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (10220261) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 300580 + ... + 300613.

It is an arithmetic number, because the mean of its divisors is an integer number (2705373).

Almost surely, 2^10220281 is an apocalyptic number.

It is an amenable number.

10220281 is a deficient number, since it is larger than the sum of its proper divisors (601211).

10220281 is an equidigital number, since it uses as much as digits as its factorization.

10220281 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 601210.

The product of its (nonzero) digits is 64, while the sum is 16.

The square root of 10220281 is about 3196.9174215172. The cubic root of 10220281 is about 217.0139301724.

Adding to 10220281 its reverse (18202201), we get a palindrome (28422482).

It can be divided in two parts, 10220 and 281, that added together give a palindrome (10501).

The spelling of 10220281 in words is "ten million, two hundred twenty thousand, two hundred eighty-one".