11101221957877 has 2 divisors, whose sum is σ = 11101221957878. Its totient is φ = 11101221957876.

The previous prime is 11101221957863. The next prime is 11101221957961. The reversal of 11101221957877 is 77875912210111.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 6184776060241 + 4916445897636 = 2486921^2 + 2217306^2 .

It is a cyclic number.

It is not a de Polignac number, because 11101221957877 - 2³⁵ = 11066862219509 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11101221957817) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5550610978938 + 5550610978939.

It is an arithmetic number, because the mean of its divisors is an integer number (5550610978939).

Almost surely, 2^{11101221957877} is an apocalyptic number.

It is an amenable number.

11101221957877 is a deficient number, since it is larger than the sum of its proper divisors (1).

11101221957877 is an equidigital number, since it uses as much as digits as its factorization.

11101221957877 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 493920, while the sum is 52.

The spelling of 11101221957877 in words is "eleven trillion, one hundred one billion, two hundred twenty-one million, nine hundred fifty-seven thousand, eight hundred seventy-seven".