11201211100997 has 2 divisors, whose sum is σ = 11201211100998. Its totient is φ = 11201211100996.

The previous prime is 11201211100993. The next prime is 11201211101051. The reversal of 11201211100997 is 79900111210211.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 8286027074116 + 2915184026881 = 2878546^2 + 1707391^2 .

It is a cyclic number.

It is not a de Polignac number, because 11201211100997 - 2² = 11201211100993 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11201211100993) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5600605550498 + 5600605550499.

It is an arithmetic number, because the mean of its divisors is an integer number (5600605550499).

Almost surely, 2^{11201211100997} is an apocalyptic number.

It is an amenable number.

11201211100997 is a deficient number, since it is larger than the sum of its proper divisors (1).

11201211100997 is an equidigital number, since it uses as much as digits as its factorization.

11201211100997 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2268, while the sum is 35.

The spelling of 11201211100997 in words is "eleven trillion, two hundred one billion, two hundred eleven million, one hundred thousand, nine hundred ninety-seven".