1020202020247 has 2 divisors, whose sum is σ = 1020202020248. Its totient is φ = 1020202020246.

The previous prime is 1020202020209. The next prime is 1020202020283. The reversal of 1020202020247 is 7420202020201.

It is a happy number.

It is a strong prime.

It is an emirp because it is prime and its reverse (7420202020201) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1020202020247 - 2³¹ = 1018054536599 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1020202020947) 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, 510101010123 + 510101010124.

It is an arithmetic number, because the mean of its divisors is an integer number (510101010124).

Almost surely, 2^{1020202020247} is an apocalyptic number.

1020202020247 is a deficient number, since it is larger than the sum of its proper divisors (1).

1020202020247 is an equidigital number, since it uses as much as digits as its factorization.

1020202020247 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 896, while the sum is 22.

Adding to 1020202020247 its reverse (7420202020201), we get a palindrome (8440404040448).

The spelling of 1020202020247 in words is "one trillion, twenty billion, two hundred two million, twenty thousand, two hundred forty-seven".