20201101087 has 2 divisors, whose sum is σ = 20201101088. Its totient is φ = 20201101086.

The previous prime is 20201101069. The next prime is 20201101091. The reversal of 20201101087 is 78010110202.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20201101087 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20201101187) 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, 10100550543 + 10100550544.

It is an arithmetic number, because the mean of its divisors is an integer number (10100550544).

Almost surely, 2^20201101087 is an apocalyptic number.

20201101087 is a deficient number, since it is larger than the sum of its proper divisors (1).

20201101087 is an equidigital number, since it uses as much as digits as its factorization.

20201101087 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 224, while the sum is 22.

Adding to 20201101087 its reverse (78010110202), we get a palindrome (98211211289).

The spelling of 20201101087 in words is "twenty billion, two hundred one million, one hundred one thousand, eighty-seven".