1021021011047 has 2 divisors, whose sum is σ = 1021021011048. Its totient is φ = 1021021011046.

The previous prime is 1021021011013. The next prime is 1021021011071. The reversal of 1021021011047 is 7401101201201.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1021021011047 - 2⁸ = 1021021010791 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1021021011247) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 510510505523 + 510510505524.

It is an arithmetic number, because the mean of its divisors is an integer number (510510505524).

Almost surely, 2^{1021021011047} is an apocalyptic number.

1021021011047 is a deficient number, since it is larger than the sum of its proper divisors (1).

1021021011047 is an equidigital number, since it uses as much as digits as its factorization.

1021021011047 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 112, while the sum is 20.

Adding to 1021021011047 its reverse (7401101201201), we get a palindrome (8422122212248).

The spelling of 1021021011047 in words is "one trillion, twenty-one billion, twenty-one million, eleven thousand, forty-seven".