11110111212901 has 2 divisors, whose sum is σ = 11110111212902. Its totient is φ = 11110111212900.

The previous prime is 11110111212899. The next prime is 11110111212971. The reversal of 11110111212901 is 10921211101111.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 7012830830625 + 4097280382276 = 2648175^2 + 2024174^2 .

It is a cyclic number.

It is not a de Polignac number, because 11110111212901 - 2¹ = 11110111212899 is a prime.

Together with 11110111212899, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11110111212971) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5555055606450 + 5555055606451.

It is an arithmetic number, because the mean of its divisors is an integer number (5555055606451).

Almost surely, 2^{11110111212901} is an apocalyptic number.

It is an amenable number.

11110111212901 is a deficient number, since it is larger than the sum of its proper divisors (1).

11110111212901 is an equidigital number, since it uses as much as digits as its factorization.

11110111212901 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 36, while the sum is 22.

The spelling of 11110111212901 in words is "eleven trillion, one hundred ten billion, one hundred eleven million, two hundred twelve thousand, nine hundred one".