111015051055 has 4 divisors (see below), whose sum is σ = 133218061272. Its totient is φ = 88812040840.

The previous prime is 111015051019. The next prime is 111015051083. The reversal of 111015051055 is 550150510111.

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

It is a de Polignac number, because none of the positive numbers 2^k-111015051055 is a prime.

It is a super-2 number, since 2×111015051055² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11101505101 + ... + 11101505110.

It is an arithmetic number, because the mean of its divisors is an integer number (33304515318).

Almost surely, 2^111015051055 is an apocalyptic number.

111015051055 is a deficient number, since it is larger than the sum of its proper divisors (22203010217).

111015051055 is an equidigital number, since it uses as much as digits as its factorization.

111015051055 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22203010216.

The product of its (nonzero) digits is 625, while the sum is 25.

Adding to 111015051055 its reverse (550150510111), we get a palindrome (661165561166).

The spelling of 111015051055 in words is "one hundred eleven billion, fifteen million, fifty-one thousand, fifty-five".