111001055 has 16 divisors (see below), whose sum is σ = 146077344. Its totient is φ = 80302080.

The previous prime is 111001019. The next prime is 111001081. The reversal of 111001055 is 550100111.

It is not a de Polignac number, because 111001055 - 2¹⁰ = 111000031 is a prime.

It is a super-2 number, since 2×111001055² = 24642468422226050, which 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 15 ways as a sum of consecutive naturals, for example, 5387 + ... + 15843.

It is an arithmetic number, because the mean of its divisors is an integer number (9129834).

Almost surely, 2^111001055 is an apocalyptic number.

111001055 is a deficient number, since it is larger than the sum of its proper divisors (35076289).

111001055 is a wasteful number, since it uses less digits than its factorization.

111001055 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10666.

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

The square root of 111001055 is about 10535.7038208180. The cubic root of 111001055 is about 480.5910759542.

Adding to 111001055 its reverse (550100111), we get a palindrome (661101166).

The spelling of 111001055 in words is "one hundred eleven million, one thousand, fifty-five".