20001202011101 has 2 divisors, whose sum is σ = 20001202011102. Its totient is φ = 20001202011100.

The previous prime is 20001202011079. The next prime is 20001202011149. The reversal of 20001202011101 is 10111020210002.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 12977249736025 + 7023952275076 = 3602395^2 + 2650274^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20001202011101 is a prime.

It is a super-3 number, since 3×20001202011101³ (a number of 41 digits) contains 333 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20001202011601) 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, 10000601005550 + 10000601005551.

It is an arithmetic number, because the mean of its divisors is an integer number (10000601005551).

Almost surely, 2^{20001202011101} is an apocalyptic number.

It is an amenable number.

20001202011101 is a deficient number, since it is larger than the sum of its proper divisors (1).

20001202011101 is an equidigital number, since it uses as much as digits as its factorization.

20001202011101 is an odious number, because the sum of its binary digits is odd.

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

Adding to 20001202011101 its reverse (10111020210002), we get a palindrome (30112222221103).

The spelling of 20001202011101 in words is "twenty trillion, one billion, two hundred two million, eleven thousand, one hundred one".