10512221 has 2 divisors, whose sum is σ = 10512222. Its totient is φ = 10512220.

The previous prime is 10512209. The next prime is 10512241. The reversal of 10512221 is 12221501.

10512221 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 9084196 + 1428025 = 3014^2 + 1195^2 .

It is a cyclic number.

It is not a de Polignac number, because 10512221 - 2⁶ = 10512157 is a prime.

It is a super-2 number, since 2×10512221² = 221013580705682, which contains 22 as substring.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 10512196 and 10512205.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (10512241) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5256110 + 5256111.

It is an arithmetic number, because the mean of its divisors is an integer number (5256111).

Almost surely, 2^10512221 is an apocalyptic number.

It is an amenable number.

10512221 is a deficient number, since it is larger than the sum of its proper divisors (1).

10512221 is an equidigital number, since it uses as much as digits as its factorization.

10512221 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 40, while the sum is 14.

The square root of 10512221 is about 3242.2555420571. The cubic root of 10512221 is about 219.0608797753.

Adding to 10512221 its reverse (12221501), we get a palindrome (22733722).

The spelling of 10512221 in words is "ten million, five hundred twelve thousand, two hundred twenty-one".