10220261 has 2 divisors, whose sum is σ = 10220262. Its totient is φ = 10220260.

The previous prime is 10220239. The next prime is 10220269. The reversal of 10220261 is 16202201.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 6280036 + 3940225 = 2506^2 + 1985^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-10220261 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 (10220269) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5110130 + 5110131.

It is an arithmetic number, because the mean of its divisors is an integer number (5110131).

Almost surely, 2^10220261 is an apocalyptic number.

It is an amenable number.

10220261 is a deficient number, since it is larger than the sum of its proper divisors (1).

10220261 is an equidigital number, since it uses as much as digits as its factorization.

10220261 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 48, while the sum is 14.

The square root of 10220261 is about 3196.9142935024. The cubic root of 10220261 is about 217.0137886146.

Adding to 10220261 its reverse (16202201), we get a palindrome (26422462).

The spelling of 10220261 in words is "ten million, two hundred twenty thousand, two hundred sixty-one".