10531121 has 2 divisors, whose sum is σ = 10531122. Its totient is φ = 10531120.

The previous prime is 10531099. The next prime is 10531139. The reversal of 10531121 is 12113501.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 10491121 + 40000 = 3239^2 + 200^2 .

It is a cyclic number.

It is not a de Polignac number, because 10531121 - 2¹⁰ = 10530097 is a prime.

It is a super-2 number, since 2×10531121² = 221809019033282, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 10531096 and 10531105.

It is not a weakly prime, because it can be changed into another prime (10531151) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5265560 + 5265561.

It is an arithmetic number, because the mean of its divisors is an integer number (5265561).

Almost surely, 2^10531121 is an apocalyptic number.

It is an amenable number.

10531121 is a deficient number, since it is larger than the sum of its proper divisors (1).

10531121 is an equidigital number, since it uses as much as digits as its factorization.

10531121 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 30, while the sum is 14.

The square root of 10531121 is about 3245.1688707986. The cubic root of 10531121 is about 219.1920849012.

Adding to 10531121 its reverse (12113501), we get a palindrome (22644622).

The spelling of 10531121 in words is "ten million, five hundred thirty-one thousand, one hundred twenty-one".