20216411 has 2 divisors, whose sum is σ = 20216412. Its totient is φ = 20216410.

The previous prime is 20216387. The next prime is 20216447. The reversal of 20216411 is 11461202.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 20216411 - 2⁶ = 20216347 is a prime.

It is a Chen prime.

It is a zygodrome in base 7.

It is a self number, because there is not a number n which added to its sum of digits gives 20216411.

It is not a weakly prime, because it can be changed into another prime (20216311) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10108205 + 10108206.

It is an arithmetic number, because the mean of its divisors is an integer number (10108206).

Almost surely, 2^20216411 is an apocalyptic number.

20216411 is a deficient number, since it is larger than the sum of its proper divisors (1).

20216411 is an equidigital number, since it uses as much as digits as its factorization.

20216411 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 96, while the sum is 17.

The square root of 20216411 is about 4496.2663399759. The cubic root of 20216411 is about 272.4173011682.

Adding to 20216411 its reverse (11461202), we get a palindrome (31677613).

The spelling of 20216411 in words is "twenty million, two hundred sixteen thousand, four hundred eleven".