10301221 has 6 divisors (see below), whose sum is σ = 11983110. Its totient is φ = 8829576.

The previous prime is 10301219. The next prime is 10301227. The reversal of 10301221 is 12210301.

It can be written as a sum of positive squares in only one way, i.e., 5832225 + 4468996 = 2415^2 + 2114^2 .

It is not a de Polignac number, because 10301221 - 2¹ = 10301219 is a prime.

It is a super-2 number, since 2×10301221² = 212230308181682, which contains 22 as substring.

It is a Duffinian number.

It is a nialpdrome in base 15.

It is a junction number, because it is equal to n+sod(n) for n = 10301198 and 10301207.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10301227) 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, 105066 + ... + 105163.

It is an arithmetic number, because the mean of its divisors is an integer number (1997185).

Almost surely, 2^10301221 is an apocalyptic number.

It is an amenable number.

10301221 is a deficient number, since it is larger than the sum of its proper divisors (1681889).

10301221 is an equidigital number, since it uses as much as digits as its factorization.

10301221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 210243 (or 210236 counting only the distinct ones).

The product of its (nonzero) digits is 12, while the sum is 10.

The square root of 10301221 is about 3209.5515263039. The cubic root of 10301221 is about 217.5853085007.

Adding to 10301221 its reverse (12210301), we get a palindrome (22511522).

The spelling of 10301221 in words is "ten million, three hundred one thousand, two hundred twenty-one".