20402200211 has 2 divisors, whose sum is σ = 20402200212. Its totient is φ = 20402200210.

The previous prime is 20402200207. The next prime is 20402200213. The reversal of 20402200211 is 11200220402.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 20402200211 - 2² = 20402200207 is a prime.

Together with 20402200213, 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 (20402200213) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10201100105 + 10201100106.

It is an arithmetic number, because the mean of its divisors is an integer number (10201100106).

Almost surely, 2^20402200211 is an apocalyptic number.

20402200211 is a deficient number, since it is larger than the sum of its proper divisors (1).

20402200211 is an equidigital number, since it uses as much as digits as its factorization.

20402200211 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 64, while the sum is 14.

Adding to 20402200211 its reverse (11200220402), we get a palindrome (31602420613).

The spelling of 20402200211 in words is "twenty billion, four hundred two million, two hundred thousand, two hundred eleven".