111211055103 has 16 divisors (see below), whose sum is σ = 151099693056. Its totient is φ = 72742196160.

The previous prime is 111211055071. The next prime is 111211055117. The reversal of 111211055103 is 301550112111.

It is not a de Polignac number, because 111211055103 - 2⁵ = 111211055071 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 111211055103.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111211055143) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1287525 + ... + 1371182.

It is an arithmetic number, because the mean of its divisors is an integer number (9443730816).

Almost surely, 2^111211055103 is an apocalyptic number.

111211055103 is a deficient number, since it is larger than the sum of its proper divisors (39888637953).

111211055103 is a wasteful number, since it uses less digits than its factorization.

111211055103 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2658974.

The product of its (nonzero) digits is 150, while the sum is 21.

Adding to 111211055103 its reverse (301550112111), we get a palindrome (412761167214).

The spelling of 111211055103 in words is "one hundred eleven billion, two hundred eleven million, fifty-five thousand, one hundred three".