1220127195 has 24 divisors (see below), whose sum is σ = 2270931984. Its totient is φ = 557772096.

The previous prime is 1220127169. The next prime is 1220127211. The reversal of 1220127195 is 5917210221.

It is not a de Polignac number, because 1220127195 - 2⁶ = 1220127131 is a prime.

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 23 ways as a sum of consecutive naturals, for example, 829284 + ... + 830753.

It is an arithmetic number, because the mean of its divisors is an integer number (94622166).

Almost surely, 2^1220127195 is an apocalyptic number.

1220127195 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1220127195 is a deficient number, since it is larger than the sum of its proper divisors (1050804789).

1220127195 is a wasteful number, since it uses less digits than its factorization.

1220127195 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1660059 (or 1660052 counting only the distinct ones).

The product of its (nonzero) digits is 2520, while the sum is 30.

The square root of 1220127195 is about 34930.3191368187. The cubic root of 1220127195 is about 1068.5668631860.

The spelling of 1220127195 in words is "one billion, two hundred twenty million, one hundred twenty-seven thousand, one hundred ninety-five".