1228105055 has 8 divisors (see below), whose sum is σ = 1473914400. Its totient is φ = 982358496.

The previous prime is 1228105051. The next prime is 1228105057. The reversal of 1228105055 is 5505018221.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1228105055 - 2² = 1228105051 is a prime.

It is a super-2 number, since 2×1228105055² = 3016484052233106050, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1228105051) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 66086 + ... + 82604.

It is an arithmetic number, because the mean of its divisors is an integer number (184239300).

Almost surely, 2^1228105055 is an apocalyptic number.

1228105055 is a deficient number, since it is larger than the sum of its proper divisors (245809345).

1228105055 is a wasteful number, since it uses less digits than its factorization.

1228105055 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31393.

The product of its (nonzero) digits is 4000, while the sum is 29.

The square root of 1228105055 is about 35044.3298551991. The cubic root of 1228105055 is about 1070.8907640506.

The spelling of 1228105055 in words is "one billion, two hundred twenty-eight million, one hundred five thousand, fifty-five".