20011011001193 has 2 divisors, whose sum is σ = 20011011001194. Its totient is φ = 20011011001192.

The previous prime is 20011011001187. The next prime is 20011011001237. The reversal of 20011011001193 is 39110011011002.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 19920270283369 + 90740717824 = 4463213^2 + 301232^2 .

It is a cyclic number.

It is not a de Polignac number, because 20011011001193 - 2²⁰ = 20011009952617 is a prime.

It is a super-2 number, since 2×20011011001193² (a number of 27 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (20011011001123) 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, 10005505500596 + 10005505500597.

It is an arithmetic number, because the mean of its divisors is an integer number (10005505500597).

Almost surely, 2^{20011011001193} is an apocalyptic number.

It is an amenable number.

20011011001193 is a deficient number, since it is larger than the sum of its proper divisors (1).

20011011001193 is an equidigital number, since it uses as much as digits as its factorization.

20011011001193 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 54, while the sum is 20.

Adding to 20011011001193 its reverse (39110011011002), we get a palindrome (59121022012195).

The spelling of 20011011001193 in words is "twenty trillion, eleven billion, eleven million, one thousand, one hundred ninety-three".