1111216055 has 16 divisors (see below), whose sum is σ = 1385208000. Its totient is φ = 854730240.

The previous prime is 1111215991. The next prime is 1111216061. The reversal of 1111216055 is 5506121111.

It is not a de Polignac number, because 1111216055 - 2⁶ = 1111215991 is a prime.

It is a super-2 number, since 2×1111216055² = 2469602241779526050, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1111216055.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 19046 + ... + 50844.

It is an arithmetic number, because the mean of its divisors is an integer number (86575500).

Almost surely, 2^1111216055 is an apocalyptic number.

1111216055 is a deficient number, since it is larger than the sum of its proper divisors (273991945).

1111216055 is a wasteful number, since it uses less digits than its factorization.

1111216055 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32074.

The product of its (nonzero) digits is 300, while the sum is 23.

The square root of 1111216055 is about 33334.9074544988. The cubic root of 1111216055 is about 1035.7767761310.

Adding to 1111216055 its reverse (5506121111), we get a palindrome (6617337166).

The spelling of 1111216055 in words is "one billion, one hundred eleven million, two hundred sixteen thousand, fifty-five".