1021421411 has 2 divisors, whose sum is σ = 1021421412. Its totient is φ = 1021421410.

The previous prime is 1021421381. The next prime is 1021421417. The reversal of 1021421411 is 1141241201.

It is a strong prime.

It is an emirp because it is prime and its reverse (1141241201) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1021421411 - 2⁶ = 1021421347 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1021421411.

It is not a weakly prime, because it can be changed into another prime (1021421417) 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, 510710705 + 510710706.

It is an arithmetic number, because the mean of its divisors is an integer number (510710706).

Almost surely, 2^1021421411 is an apocalyptic number.

1021421411 is a deficient number, since it is larger than the sum of its proper divisors (1).

1021421411 is an equidigital number, since it uses as much as digits as its factorization.

1021421411 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 17.

The square root of 1021421411 is about 31959.6841505044. The cubic root of 1021421411 is about 1007.0900822624.

Adding to 1021421411 its reverse (1141241201), we get a palindrome (2162662612).

The spelling of 1021421411 in words is "one billion, twenty-one million, four hundred twenty-one thousand, four hundred eleven".