111214161655 has 4 divisors (see below), whose sum is σ = 133456993992. Its totient is φ = 88971329320.

The previous prime is 111214161647. The next prime is 111214161671. The reversal of 111214161655 is 556161412111.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 111214161655 - 2³ = 111214161647 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 111214161655.

It is a congruent number.

It is an unprimeable number.

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 in 3 ways as a sum of consecutive naturals, for example, 11121416161 + ... + 11121416170.

It is an arithmetic number, because the mean of its divisors is an integer number (33364248498).

Almost surely, 2^111214161655 is an apocalyptic number.

111214161655 is a deficient number, since it is larger than the sum of its proper divisors (22242832337).

111214161655 is an equidigital number, since it uses as much as digits as its factorization.

111214161655 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22242832336.

The product of its digits is 7200, while the sum is 34.

Adding to 111214161655 its reverse (556161412111), we get a palindrome (667375573766).

The spelling of 111214161655 in words is "one hundred eleven billion, two hundred fourteen million, one hundred sixty-one thousand, six hundred fifty-five".