1024012021 has 2 divisors, whose sum is σ = 1024012022. Its totient is φ = 1024012020.

The previous prime is 1024011997. The next prime is 1024012043. The reversal of 1024012021 is 1202104201.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 696220996 + 327791025 = 26386^2 + 18105^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1024012021 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1024011992 and 1024012010.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1024012061) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 512006010 + 512006011.

It is an arithmetic number, because the mean of its divisors is an integer number (512006011).

Almost surely, 2^1024012021 is an apocalyptic number.

It is an amenable number.

1024012021 is a deficient number, since it is larger than the sum of its proper divisors (1).

1024012021 is an equidigital number, since it uses as much as digits as its factorization.

1024012021 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 32, while the sum is 13.

The square root of 1024012021 is about 32000.1878275738. The cubic root of 1024012021 is about 1007.9407840439.

Adding to 1024012021 its reverse (1202104201), we get a palindrome (2226116222).

The spelling of 1024012021 in words is "one billion, twenty-four million, twelve thousand, twenty-one".