10123021 has 2 divisors, whose sum is σ = 10123022. Its totient is φ = 10123020.

The previous prime is 10122997. The next prime is 10123033. The reversal of 10123021 is 12032101.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 5221225 + 4901796 = 2285^2 + 2214^2 .

It is a cyclic number.

It is not a de Polignac number, because 10123021 - 2⁵ = 10122989 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 10122989 and 10123007.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (10120021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5061510 + 5061511.

It is an arithmetic number, because the mean of its divisors is an integer number (5061511).

Almost surely, 2^10123021 is an apocalyptic number.

It is an amenable number.

10123021 is a deficient number, since it is larger than the sum of its proper divisors (1).

10123021 is an equidigital number, since it uses as much as digits as its factorization.

10123021 is an odious number, because the sum of its binary digits is odd.

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

The square root of 10123021 is about 3181.6695302938. The cubic root of 10123021 is about 216.3233397541.

Adding to 10123021 its reverse (12032101), we get a palindrome (22155122).

The spelling of 10123021 in words is "ten million, one hundred twenty-three thousand, twenty-one".