20001102001087 has 2 divisors, whose sum is σ = 20001102001088. Its totient is φ = 20001102001086.

The previous prime is 20001102001051. The next prime is 20001102001213. The reversal of 20001102001087 is 78010020110002.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 20001102001087 - 2⁷ = 20001102000959 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20001102001007) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10000551000543 + 10000551000544.

It is an arithmetic number, because the mean of its divisors is an integer number (10000551000544).

Almost surely, 2^{20001102001087} is an apocalyptic number.

20001102001087 is a deficient number, since it is larger than the sum of its proper divisors (1).

20001102001087 is an equidigital number, since it uses as much as digits as its factorization.

20001102001087 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 20001102001087 its reverse (78010020110002), we get a palindrome (98011122111089).

The spelling of 20001102001087 in words is "twenty trillion, one billion, one hundred two million, one thousand, eighty-seven".