10211261 has 2 divisors, whose sum is σ = 10211262. Its totient is φ = 10211260.

The previous prime is 10211251. The next prime is 10211273. The reversal of 10211261 is 16211201.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 8375236 + 1836025 = 2894^2 + 1355^2 .

It is an emirp because it is prime and its reverse (16211201) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 10211261 - 2⁶ = 10211197 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (10211221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5105630 + 5105631.

It is an arithmetic number, because the mean of its divisors is an integer number (5105631).

Almost surely, 2^10211261 is an apocalyptic number.

It is an amenable number.

10211261 is a deficient number, since it is larger than the sum of its proper divisors (1).

10211261 is an equidigital number, since it uses as much as digits as its factorization.

10211261 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 24, while the sum is 14.

The square root of 10211261 is about 3195.5063761476. The cubic root of 10211261 is about 216.9500688562.

Adding to 10211261 its reverse (16211201), we get a palindrome (26422462).

The spelling of 10211261 in words is "ten million, two hundred eleven thousand, two hundred sixty-one".