1216473127 has 4 divisors (see below), whose sum is σ = 1219219560. Its totient is φ = 1213726696.

The previous prime is 1216473113. The next prime is 1216473143. The reversal of 1216473127 is 7213746121.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1216473127 - 2¹⁵ = 1216440359 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1216473092 and 1216473101.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1216473107) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1372552 + ... + 1373437.

It is an arithmetic number, because the mean of its divisors is an integer number (304804890).

Almost surely, 2^1216473127 is an apocalyptic number.

1216473127 is a deficient number, since it is larger than the sum of its proper divisors (2746433).

1216473127 is an equidigital number, since it uses as much as digits as its factorization.

1216473127 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2746432.

The product of its digits is 14112, while the sum is 34.

The square root of 1216473127 is about 34877.9748121934. The cubic root of 1216473127 is about 1067.4990727742.

The spelling of 1216473127 in words is "one billion, two hundred sixteen million, four hundred seventy-three thousand, one hundred twenty-seven".