1227115513 has 16 divisors (see below), whose sum is σ = 1394955520. Its totient is φ = 1070102016.

The previous prime is 1227115459. The next prime is 1227115517. The reversal of 1227115513 is 3155117221.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1227115513 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1227115517) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 83881 + ... + 97417.

It is an arithmetic number, because the mean of its divisors is an integer number (87184720).

Almost surely, 2^1227115513 is an apocalyptic number.

1227115513 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

1227115513 is a deficient number, since it is larger than the sum of its proper divisors (167840007).

1227115513 is a wasteful number, since it uses less digits than its factorization.

1227115513 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13936.

The product of its digits is 2100, while the sum is 28.

The square root of 1227115513 is about 35030.2085777404. The cubic root of 1227115513 is about 1070.6030644151.

The spelling of 1227115513 in words is "one billion, two hundred twenty-seven million, one hundred fifteen thousand, five hundred thirteen".