10011121 has 2 divisors, whose sum is σ = 10011122. Its totient is φ = 10011120.

The previous prime is 10011107. The next prime is 10011163. The reversal of 10011121 is 12111001.

10011121 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 10010896 + 225 = 3164^2 + 15^2 .

It is a cyclic number.

It is not a de Polignac number, because 10011121 - 2¹³ = 10002929 is a prime.

It is not a weakly prime, because it can be changed into another prime (10011101) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5005560 + 5005561.

It is an arithmetic number, because the mean of its divisors is an integer number (5005561).

Almost surely, 2^10011121 is an apocalyptic number.

It is an amenable number.

10011121 is a deficient number, since it is larger than the sum of its proper divisors (1).

10011121 is an equidigital number, since it uses as much as digits as its factorization.

10011121 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2, while the sum is 7.

The square root of 10011121 is about 3164.0355560581. The cubic root of 10011121 is about 215.5233043095.

Adding to 10011121 its reverse (12111001), we get a palindrome (22122122).

Multiplying 10011121 by its reverse (12111001), we get a palindrome (121244696442121).

The spelling of 10011121 in words is "ten million, eleven thousand, one hundred twenty-one".