216121627 has 2 divisors, whose sum is σ = 216121628. Its totient is φ = 216121626.

The previous prime is 216121621. The next prime is 216121649. The reversal of 216121627 is 726121612.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-216121627 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 216121595 and 216121604.

It is not a weakly prime, because it can be changed into another prime (216121621) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 108060813 + 108060814.

It is an arithmetic number, because the mean of its divisors is an integer number (108060814).

Almost surely, 2^216121627 is an apocalyptic number.

216121627 is a deficient number, since it is larger than the sum of its proper divisors (1).

216121627 is an equidigital number, since it uses as much as digits as its factorization.

216121627 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2016, while the sum is 28.

The square root of 216121627 is about 14701.0757089405. The cubic root of 216121627 is about 600.1125964613.

The spelling of 216121627 in words is "two hundred sixteen million, one hundred twenty-one thousand, six hundred twenty-seven".