1021012441 has 2 divisors, whose sum is σ = 1021012442. Its totient is φ = 1021012440.

The previous prime is 1021012429. The next prime is 1021012451. The reversal of 1021012441 is 1442101201.

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., 998307216 + 22705225 = 31596^2 + 4765^2 .

It is an emirp because it is prime and its reverse (1442101201) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1021012441 - 2⁷ = 1021012313 is a prime.

It is not a weakly prime, because it can be changed into another prime (1021012451) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 510506220 + 510506221.

It is an arithmetic number, because the mean of its divisors is an integer number (510506221).

Almost surely, 2^1021012441 is an apocalyptic number.

It is an amenable number.

1021012441 is a deficient number, since it is larger than the sum of its proper divisors (1).

1021012441 is an equidigital number, since it uses as much as digits as its factorization.

1021012441 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 64, while the sum is 16.

The square root of 1021012441 is about 31953.2852927520. The cubic root of 1021012441 is about 1006.9556537074.

Adding to 1021012441 its reverse (1442101201), we get a palindrome (2463113642).

The spelling of 1021012441 in words is "one billion, twenty-one million, twelve thousand, four hundred forty-one".