1216040041 has 2 divisors, whose sum is σ = 1216040042. Its totient is φ = 1216040040.

The previous prime is 1216040029. The next prime is 1216040087. The reversal of 1216040041 is 1400406121.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1205825625 + 10214416 = 34725^2 + 3196^2 .

It is a cyclic number.

It is not a de Polignac number, because 1216040041 - 2¹³ = 1216031849 is a prime.

It is not a weakly prime, because it can be changed into another prime (1216040011) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 608020020 + 608020021.

It is an arithmetic number, because the mean of its divisors is an integer number (608020021).

Almost surely, 2^1216040041 is an apocalyptic number.

It is an amenable number.

1216040041 is a deficient number, since it is larger than the sum of its proper divisors (1).

1216040041 is an equidigital number, since it uses as much as digits as its factorization.

1216040041 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 192, while the sum is 19.

The square root of 1216040041 is about 34871.7656708117. The cubic root of 1216040041 is about 1067.3723748723.

Adding to 1216040041 its reverse (1400406121), we get a palindrome (2616446162).

The spelling of 1216040041 in words is "one billion, two hundred sixteen million, forty thousand, forty-one".