1021204411 has 2 divisors, whose sum is σ = 1021204412. Its totient is φ = 1021204410.

The previous prime is 1021204409. The next prime is 1021204427. The reversal of 1021204411 is 1144021201.

It is a happy number.

It is an a-pointer prime, because the next prime (1021204427) can be obtained adding 1021204411 to its sum of digits (16).

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1021204411 - 2¹ = 1021204409 is a prime.

Together with 1021204409, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (1021204441) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 510602205 + 510602206.

It is an arithmetic number, because the mean of its divisors is an integer number (510602206).

Almost surely, 2^1021204411 is an apocalyptic number.

1021204411 is a deficient number, since it is larger than the sum of its proper divisors (1).

1021204411 is an equidigital number, since it uses as much as digits as its factorization.

1021204411 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 1021204411 is about 31956.2890680379. The cubic root of 1021204411 is about 1007.0187587703.

Adding to 1021204411 its reverse (1144021201), we get a palindrome (2165225612).

The spelling of 1021204411 in words is "one billion, twenty-one million, two hundred four thousand, four hundred eleven".