1219127055 has 32 divisors (see below), whose sum is σ = 1987255296. Its totient is φ = 638098944.

The previous prime is 1219127051. The next prime is 1219127059. The reversal of 1219127055 is 5507219121.

It is a Cunningham number, because it is equal to 34916²-1.

It is an interprime number because it is at equal distance from previous prime (1219127051) and next prime (1219127059).

It is not a de Polignac number, because 1219127055 - 2² = 1219127051 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1219127051) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 171094 + ... + 178076.

It is an arithmetic number, because the mean of its divisors is an integer number (62101728).

Almost surely, 2^1219127055 is an apocalyptic number.

1219127055 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1219127055 is a deficient number, since it is larger than the sum of its proper divisors (768128241).

1219127055 is a wasteful number, since it uses less digits than its factorization.

1219127055 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7207.

The product of its (nonzero) digits is 6300, while the sum is 33.

The square root of 1219127055 is about 34915.9999856799. Note that the first 4 decimals coincide. The cubic root of 1219127055 is about 1068.2748147806.

The spelling of 1219127055 in words is "one billion, two hundred nineteen million, one hundred twenty-seven thousand, fifty-five".