1216016911 has 2 divisors, whose sum is σ = 1216016912. Its totient is φ = 1216016910.

The previous prime is 1216016899. The next prime is 1216016917. The reversal of 1216016911 is 1196106121.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1216016911 - 2¹³ = 1216008719 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1216016911.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1216016917) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 608008455 + 608008456.

It is an arithmetic number, because the mean of its divisors is an integer number (608008456).

Almost surely, 2^1216016911 is an apocalyptic number.

1216016911 is a deficient number, since it is larger than the sum of its proper divisors (1).

1216016911 is an equidigital number, since it uses as much as digits as its factorization.

1216016911 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 648, while the sum is 28.

The square root of 1216016911 is about 34871.4340255746. The cubic root of 1216016911 is about 1067.3656074198.

The spelling of 1216016911 in words is "one billion, two hundred sixteen million, sixteen thousand, nine hundred eleven".