10023121 has 4 divisors (see below), whose sum is σ = 10029492. Its totient is φ = 10016752.

The previous prime is 10023113. The next prime is 10023161. The reversal of 10023121 is 12132001.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 12132001 = 7 ⋅1733143.

It can be written as a sum of positive squares in 2 ways, for example, as 3748096 + 6275025 = 1936^2 + 2505^2 .

It is a cyclic number.

It is not a de Polignac number, because 10023121 - 2³ = 10023113 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 10023098 and 10023107.

It is not an unprimeable number, because it can be changed into a prime (10023161) 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 in 3 ways as a sum of consecutive naturals, for example, 1071 + ... + 4603.

It is an arithmetic number, because the mean of its divisors is an integer number (2507373).

Almost surely, 2^10023121 is an apocalyptic number.

It is an amenable number.

10023121 is a deficient number, since it is larger than the sum of its proper divisors (6371).

10023121 is an equidigital number, since it uses as much as digits as its factorization.

10023121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6370.

The product of its (nonzero) digits is 12, while the sum is 10.

The square root of 10023121 is about 3165.9313005812. The cubic root of 10023121 is about 215.6093834801.

Adding to 10023121 its reverse (12132001), we get a palindrome (22155122).

The spelling of 10023121 in words is "ten million, twenty-three thousand, one hundred twenty-one".