111129008255 has 4 divisors (see below), whose sum is σ = 133354809912. Its totient is φ = 88903206600.

The previous prime is 111129008251. The next prime is 111129008261. The reversal of 111129008255 is 552800921111.

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

It is not a de Polignac number, because 111129008255 - 2² = 111129008251 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111129008251) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11112900821 + ... + 11112900830.

It is an arithmetic number, because the mean of its divisors is an integer number (33338702478).

Almost surely, 2^111129008255 is an apocalyptic number.

111129008255 is a deficient number, since it is larger than the sum of its proper divisors (22225801657).

111129008255 is an equidigital number, since it uses as much as digits as its factorization.

111129008255 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22225801656.

The product of its (nonzero) digits is 7200, while the sum is 35.

Adding to 111129008255 its reverse (552800921111), we get a palindrome (663929929366).

The spelling of 111129008255 in words is "one hundred eleven billion, one hundred twenty-nine million, eight thousand, two hundred fifty-five".