216156011 has 2 divisors, whose sum is σ = 216156012. Its totient is φ = 216156010.

The previous prime is 216156007. The next prime is 216156041. The reversal of 216156011 is 110651612.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 216156011 - 2² = 216156007 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (216156041) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 108078005 + 108078006.

It is an arithmetic number, because the mean of its divisors is an integer number (108078006).

Almost surely, 2^216156011 is an apocalyptic number.

216156011 is a deficient number, since it is larger than the sum of its proper divisors (1).

216156011 is an equidigital number, since it uses as much as digits as its factorization.

216156011 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 360, while the sum is 23.

The square root of 216156011 is about 14702.2451006640. The cubic root of 216156011 is about 600.1444198650.

The spelling of 216156011 in words is "two hundred sixteen million, one hundred fifty-six thousand, eleven".