8901121 has 2 divisors, whose sum is σ = 8901122. Its totient is φ = 8901120.

The previous prime is 8901119. The next prime is 8901227. The reversal of 8901121 is 1211098.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 7182400 + 1718721 = 2680^2 + 1311^2 .

It is a cyclic number.

It is not a de Polignac number, because 8901121 - 2¹ = 8901119 is a prime.

Together with 8901119, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 8901092 and 8901101.

It is not a weakly prime, because it can be changed into another prime (8902121) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4450560 + 4450561.

It is an arithmetic number, because the mean of its divisors is an integer number (4450561).

Almost surely, 2^8901121 is an apocalyptic number.

It is an amenable number.

8901121 is a deficient number, since it is larger than the sum of its proper divisors (1).

8901121 is an equidigital number, since it uses as much as digits as its factorization.

8901121 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 144, while the sum is 22.

The square root of 8901121 is about 2983.4746521464. The cubic root of 8901121 is about 207.2438102106.

The spelling of 8901121 in words is "eight million, nine hundred one thousand, one hundred twenty-one".