11101100261 has 2 divisors, whose sum is σ = 11101100262. Its totient is φ = 11101100260.

The previous prime is 11101100251. The next prime is 11101100333. The reversal of 11101100261 is 16200110111.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 10561467361 + 539632900 = 102769^2 + 23230^2 .

It is an emirp because it is prime and its reverse (16200110111) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 11101100261 - 2²² = 11096905957 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11101100201) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5550550130 + 5550550131.

It is an arithmetic number, because the mean of its divisors is an integer number (5550550131).

Almost surely, 2^11101100261 is an apocalyptic number.

It is an amenable number.

11101100261 is a deficient number, since it is larger than the sum of its proper divisors (1).

11101100261 is an equidigital number, since it uses as much as digits as its factorization.

11101100261 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 12, while the sum is 14.

Adding to 11101100261 its reverse (16200110111), we get a palindrome (27301210372).

The spelling of 11101100261 in words is "eleven billion, one hundred one million, one hundred thousand, two hundred sixty-one".