20533450211 has 2 divisors, whose sum is σ = 20533450212. Its totient is φ = 20533450210.

The previous prime is 20533450207. The next prime is 20533450213. The reversal of 20533450211 is 11205433502.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 20533450211 - 2² = 20533450207 is a prime.

Together with 20533450213, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (20533450213) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10266725105 + 10266725106.

It is an arithmetic number, because the mean of its divisors is an integer number (10266725106).

Almost surely, 2^20533450211 is an apocalyptic number.

20533450211 is a deficient number, since it is larger than the sum of its proper divisors (1).

20533450211 is an equidigital number, since it uses as much as digits as its factorization.

20533450211 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3600, while the sum is 26.

Adding to 20533450211 its reverse (11205433502), we get a palindrome (31738883713).

The spelling of 20533450211 in words is "twenty billion, five hundred thirty-three million, four hundred fifty thousand, two hundred eleven".