9100121 has 2 divisors, whose sum is σ = 9100122. Its totient is φ = 9100120.

The previous prime is 9100109. The next prime is 9100129. The reversal of 9100121 is 1210019.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 8637721 + 462400 = 2939^2 + 680^2 .

It is an emirp because it is prime and its reverse (1210019) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-9100121 is a prime.

It is a Chen prime.

It is an Ulam number.

It is a junction number, because it is equal to n+sod(n) for n = 9100096 and 9100105.

It is not a weakly prime, because it can be changed into another prime (9100129) 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, 4550060 + 4550061.

It is an arithmetic number, because the mean of its divisors is an integer number (4550061).

Almost surely, 2^9100121 is an apocalyptic number.

It is an amenable number.

9100121 is a deficient number, since it is larger than the sum of its proper divisors (1).

9100121 is an equidigital number, since it uses as much as digits as its factorization.

9100121 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 18, while the sum is 14.

The square root of 9100121 is about 3016.6406812877. The cubic root of 9100121 is about 208.7768732062.

The spelling of 9100121 in words is "nine million, one hundred thousand, one hundred twenty-one".