20102120100011 has 2 divisors, whose sum is σ = 20102120100012. Its totient is φ = 20102120100010.

The previous prime is 20102120099993. The next prime is 20102120100061. The reversal of 20102120100011 is 11000102120102.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20102120100011 is a prime.

It is a Sophie Germain prime.

It is a junction number, because it is equal to n+sod(n) for n = 20102120099965 and 20102120100001.

It is not a weakly prime, because it can be changed into another prime (20102120100061) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10051060050005 + 10051060050006.

It is an arithmetic number, because the mean of its divisors is an integer number (10051060050006).

Almost surely, 2^{20102120100011} is an apocalyptic number.

20102120100011 is a deficient number, since it is larger than the sum of its proper divisors (1).

20102120100011 is an equidigital number, since it uses as much as digits as its factorization.

20102120100011 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 8, while the sum is 11.

Adding to 20102120100011 its reverse (11000102120102), we get a palindrome (31102222220113).

The spelling of 20102120100011 in words is "twenty trillion, one hundred two billion, one hundred twenty million, one hundred thousand, eleven".