216622620211 has 2 divisors, whose sum is σ = 216622620212. Its totient is φ = 216622620210.

The previous prime is 216622620161. The next prime is 216622620289. The reversal of 216622620211 is 112026226612.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 216622620211 - 2²⁵ = 216589065779 is a prime.

It is not a weakly prime, because it can be changed into another prime (216622620311) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 108311310105 + 108311310106.

It is an arithmetic number, because the mean of its divisors is an integer number (108311310106).

Almost surely, 2^216622620211 is an apocalyptic number.

216622620211 is a deficient number, since it is larger than the sum of its proper divisors (1).

216622620211 is an equidigital number, since it uses as much as digits as its factorization.

216622620211 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6912, while the sum is 31.

Adding to 216622620211 its reverse (112026226612), we get a palindrome (328648846823).

The spelling of 216622620211 in words is "two hundred sixteen billion, six hundred twenty-two million, six hundred twenty thousand, two hundred eleven".