20111411 has 2 divisors, whose sum is σ = 20111412. Its totient is φ = 20111410.

The previous prime is 20111393. The next prime is 20111447. The reversal of 20111411 is 11411102.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 20111411 - 2¹⁸ = 19849267 is a prime.

It is a Sophie Germain prime.

It is a junction number, because it is equal to n+sod(n) for n = 20111392 and 20111401.

It is not a weakly prime, because it can be changed into another prime (20111491) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10055705 + 10055706.

It is an arithmetic number, because the mean of its divisors is an integer number (10055706).

Almost surely, 2^20111411 is an apocalyptic number.

20111411 is a deficient number, since it is larger than the sum of its proper divisors (1).

20111411 is an equidigital number, since it uses as much as digits as its factorization.

20111411 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 8, while the sum is 11.

The square root of 20111411 is about 4484.5747847483. The cubic root of 20111411 is about 271.9448552784.

Adding to 20111411 its reverse (11411102), we get a palindrome (31522513).

The spelling of 20111411 in words is "twenty million, one hundred eleven thousand, four hundred eleven".