1211334055 has 16 divisors (see below), whose sum is σ = 1501234560. Its totient is φ = 937775872.

The previous prime is 1211334043. The next prime is 1211334221. The reversal of 1211334055 is 5504331121.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 1211334055 - 2²⁵ = 1177779623 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8044 + ... + 49873.

It is an arithmetic number, because the mean of its divisors is an integer number (93827160).

Almost surely, 2^1211334055 is an apocalyptic number.

1211334055 is a deficient number, since it is larger than the sum of its proper divisors (289900505).

1211334055 is an equidigital number, since it uses as much as digits as its factorization.

1211334055 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 58058.

The product of its (nonzero) digits is 1800, while the sum is 25.

The square root of 1211334055 is about 34804.2246717263. The cubic root of 1211334055 is about 1065.9937105606.

Adding to 1211334055 its reverse (5504331121), we get a palindrome (6715665176).

The spelling of 1211334055 in words is "one billion, two hundred eleven million, three hundred thirty-four thousand, fifty-five".