20211411211 has 2 divisors, whose sum is σ = 20211411212. Its totient is φ = 20211411210.

The previous prime is 20211411137. The next prime is 20211411247. The reversal of 20211411211 is 11211411202.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 20211411211 - 2⁹ = 20211410699 is a prime.

It is a super-2 number, since 2×20211411211² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (20211411251) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10105705605 + 10105705606.

It is an arithmetic number, because the mean of its divisors is an integer number (10105705606).

Almost surely, 2^20211411211 is an apocalyptic number.

20211411211 is a deficient number, since it is larger than the sum of its proper divisors (1).

20211411211 is an equidigital number, since it uses as much as digits as its factorization.

20211411211 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 20211411211 its reverse (11211411202), we get a palindrome (31422822413).

Subtracting from 20211411211 its reverse (11211411202), we obtain a palindrome (9000000009).

The spelling of 20211411211 in words is "twenty billion, two hundred eleven million, four hundred eleven thousand, two hundred eleven".