20121200011163 has 2 divisors, whose sum is σ = 20121200011164. Its totient is φ = 20121200011162.

The previous prime is 20121200011141. The next prime is 20121200011313. The reversal of 20121200011163 is 36111000212102.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20121200011163 is a prime.

It is a super-2 number, since 2×20121200011163² (a number of 27 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (20121200011063) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10060600005581 + 10060600005582.

It is an arithmetic number, because the mean of its divisors is an integer number (10060600005582).

Almost surely, 2^{20121200011163} is an apocalyptic number.

20121200011163 is a deficient number, since it is larger than the sum of its proper divisors (1).

20121200011163 is an equidigital number, since it uses as much as digits as its factorization.

20121200011163 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 144, while the sum is 20.

Adding to 20121200011163 its reverse (36111000212102), we get a palindrome (56232200223265).

The spelling of 20121200011163 in words is "twenty trillion, one hundred twenty-one billion, two hundred million, eleven thousand, one hundred sixty-three".