1020020201087 has 2 divisors, whose sum is σ = 1020020201088. Its totient is φ = 1020020201086.

The previous prime is 1020020201077. The next prime is 1020020201113. The reversal of 1020020201087 is 7801020200201.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1020020201087 - 2⁴ = 1020020201071 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1020020201077) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 510010100543 + 510010100544.

It is an arithmetic number, because the mean of its divisors is an integer number (510010100544).

Almost surely, 2^{1020020201087} is an apocalyptic number.

1020020201087 is a deficient number, since it is larger than the sum of its proper divisors (1).

1020020201087 is an equidigital number, since it uses as much as digits as its factorization.

1020020201087 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 448, while the sum is 23.

Adding to 1020020201087 its reverse (7801020200201), we get a palindrome (8821040401288).

The spelling of 1020020201087 in words is "one trillion, twenty billion, twenty million, two hundred one thousand, eighty-seven".