10722161 has 2 divisors, whose sum is σ = 10722162. Its totient is φ = 10722160.

The previous prime is 10722143. The next prime is 10722169. The reversal of 10722161 is 16122701.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 7187761 + 3534400 = 2681^2 + 1880^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-10722161 is a prime.

It is a super-2 number, since 2×10722161² = 229929473019842, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (10722169) 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 as a sum of consecutive naturals, namely, 5361080 + 5361081.

It is an arithmetic number, because the mean of its divisors is an integer number (5361081).

Almost surely, 2^10722161 is an apocalyptic number.

It is an amenable number.

10722161 is a deficient number, since it is larger than the sum of its proper divisors (1).

10722161 is an equidigital number, since it uses as much as digits as its factorization.

10722161 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 168, while the sum is 20.

The square root of 10722161 is about 3274.4711023309. The cubic root of 10722161 is about 220.5095694998.

Adding to 10722161 its reverse (16122701), we get a palindrome (26844862).

The spelling of 10722161 in words is "ten million, seven hundred twenty-two thousand, one hundred sixty-one".