11111111200101 has 16 divisors (see below), whose sum is σ = 16161704290368. Its totient is φ = 6733970121600.

The previous prime is 11111111200069. The next prime is 11111111200181. The reversal of 11111111200101 is 10100211111111.

It is not a de Polignac number, because 11111111200101 - 2⁵ = 11111111200069 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11111111200181) 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 in 15 ways as a sum of consecutive naturals, for example, 6019081 + ... + 7645361.

It is an arithmetic number, because the mean of its divisors is an integer number (1010106518148).

Almost surely, 2^{11111111200101} is an apocalyptic number.

11111111200101 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

11111111200101 is a deficient number, since it is larger than the sum of its proper divisors (5050593090267).

11111111200101 is a wasteful number, since it uses less digits than its factorization.

11111111200101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1833332.

The product of its (nonzero) digits is 2, while the sum is 12.

Adding to 11111111200101 its reverse (10100211111111), we get a palindrome (21211322311212).

The spelling of 11111111200101 in words is "eleven trillion, one hundred eleven billion, one hundred eleven million, two hundred thousand, one hundred one".