1101235555 has 12 divisors (see below), whose sum is σ = 1537235280. Its totient is φ = 755132784.

The previous prime is 1101235483. The next prime is 1101235559. The reversal of 1101235555 is 5555321011.

It is not a de Polignac number, because 1101235555 - 2⁹ = 1101235043 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1101235559) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2247175 + ... + 2247664.

It is an arithmetic number, because the mean of its divisors is an integer number (128102940).

Almost surely, 2^1101235555 is an apocalyptic number.

1101235555 is a deficient number, since it is larger than the sum of its proper divisors (435999725).

1101235555 is an equidigital number, since it uses as much as digits as its factorization.

1101235555 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4494858 (or 4494851 counting only the distinct ones).

The product of its (nonzero) digits is 3750, while the sum is 28.

The square root of 1101235555 is about 33184.8693684336. The cubic root of 1101235555 is about 1032.6664674618. Note that the first 3 decimals are identical.

Adding to 1101235555 its reverse (5555321011), we get a palindrome (6656556566).

The spelling of 1101235555 in words is "one billion, one hundred one million, two hundred thirty-five thousand, five hundred fifty-five".