111000000155 has 16 divisors (see below), whose sum is σ = 145330758144. Its totient is φ = 80715235680.

The previous prime is 111000000151. The next prime is 111000000161. The reversal of 111000000155 is 551000000111.

It is not a de Polignac number, because 111000000155 - 2² = 111000000151 is a prime.

It is not an unprimeable number, because it can be changed into a prime (111000000151) 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, 230432 + ... + 524498.

It is an arithmetic number, because the mean of its divisors is an integer number (9083172384).

Almost surely, 2^111000000155 is an apocalyptic number.

111000000155 is a deficient number, since it is larger than the sum of its proper divisors (34330757989).

111000000155 is a wasteful number, since it uses less digits than its factorization.

111000000155 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 300946.

The product of its (nonzero) digits is 25, while the sum is 14.

Adding to 111000000155 its reverse (551000000111), we get a palindrome (662000000266).

The spelling of 111000000155 in words is "one hundred eleven billion, one hundred fifty-five", and thus it is an aban number.