20535004211 has 2 divisors, whose sum is σ = 20535004212. Its totient is φ = 20535004210.

The previous prime is 20535004169. The next prime is 20535004229. The reversal of 20535004211 is 11240053502.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 20535004211 - 2²⁶ = 20467895347 is a prime.

It is not a weakly prime, because it can be changed into another prime (20535004241) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10267502105 + 10267502106.

It is an arithmetic number, because the mean of its divisors is an integer number (10267502106).

Almost surely, 2^20535004211 is an apocalyptic number.

20535004211 is a deficient number, since it is larger than the sum of its proper divisors (1).

20535004211 is an equidigital number, since it uses as much as digits as its factorization.

20535004211 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1200, while the sum is 23.

Adding to 20535004211 its reverse (11240053502), we get a palindrome (31775057713).

The spelling of 20535004211 in words is "twenty billion, five hundred thirty-five million, four thousand, two hundred eleven".