12011102020961 has 2 divisors, whose sum is σ = 12011102020962. Its totient is φ = 12011102020960.

The previous prime is 12011102020937. The next prime is 12011102021029. The reversal of 12011102020961 is 16902020111021.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 9497152245025 + 2513949775936 = 3081745^2 + 1585544^2 .

It is an emirp because it is prime and its reverse (16902020111021) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 12011102020961 - 2²² = 12011097826657 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 12011102020961.

It is not a weakly prime, because it can be changed into another prime (12011102920961) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6005551010480 + 6005551010481.

It is an arithmetic number, because the mean of its divisors is an integer number (6005551010481).

Almost surely, 2^{12011102020961} is an apocalyptic number.

It is an amenable number.

12011102020961 is a deficient number, since it is larger than the sum of its proper divisors (1).

12011102020961 is an equidigital number, since it uses as much as digits as its factorization.

12011102020961 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 432, while the sum is 26.

Adding to 12011102020961 its reverse (16902020111021), we get a palindrome (28913122131982).

The spelling of 12011102020961 in words is "twelve trillion, eleven billion, one hundred two million, twenty thousand, nine hundred sixty-one".