10240121 has 2 divisors, whose sum is σ = 10240122. Its totient is φ = 10240120.

The previous prime is 10240067. The next prime is 10240123. The reversal of 10240121 is 12104201.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 10240000 + 121 = 3200^2 + 11^2 .

It is an emirp because it is prime and its reverse (12104201) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 10240121 - 2¹⁴ = 10223737 is a prime.

Together with 10240123, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (10240123) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5120060 + 5120061.

It is an arithmetic number, because the mean of its divisors is an integer number (5120061).

Almost surely, 2^10240121 is an apocalyptic number.

It is an amenable number.

10240121 is a deficient number, since it is larger than the sum of its proper divisors (1).

10240121 is an equidigital number, since it uses as much as digits as its factorization.

10240121 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 16, while the sum is 11.

The square root of 10240121 is about 3200.0189061941. The cubic root of 10240121 is about 217.1542646485.

Adding to 10240121 its reverse (12104201), we get a palindrome (22344322).

The spelling of 10240121 in words is "ten million, two hundred forty thousand, one hundred twenty-one".