1216141471 has 2 divisors, whose sum is σ = 1216141472. Its totient is φ = 1216141470.

The previous prime is 1216141457. The next prime is 1216141489. The reversal of 1216141471 is 1741416121.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1216141471 - 2²¹ = 1214044319 is a prime.

It is a super-3 number, since 3×1216141471³ (a number of 28 digits) contains 333 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1216141411) 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 as a sum of consecutive naturals, namely, 608070735 + 608070736.

It is an arithmetic number, because the mean of its divisors is an integer number (608070736).

Almost surely, 2^1216141471 is an apocalyptic number.

1216141471 is a deficient number, since it is larger than the sum of its proper divisors (1).

1216141471 is an equidigital number, since it uses as much as digits as its factorization.

1216141471 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1344, while the sum is 28.

The square root of 1216141471 is about 34873.2199689102. The cubic root of 1216141471 is about 1067.4020505865.

Adding to 1216141471 its reverse (1741416121), we get a palindrome (2957557592).

The spelling of 1216141471 in words is "one billion, two hundred sixteen million, one hundred forty-one thousand, four hundred seventy-one".