20203122211 has 2 divisors, whose sum is σ = 20203122212. Its totient is φ = 20203122210.

The previous prime is 20203122209. The next prime is 20203122229. The reversal of 20203122211 is 11222130202.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 20203122211 - 2¹ = 20203122209 is a prime.

It is a super-2 number, since 2×20203122211² (a number of 21 digits) contains 22 as substring.

Together with 20203122209, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (20203122241) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10101561105 + 10101561106.

It is an arithmetic number, because the mean of its divisors is an integer number (10101561106).

Almost surely, 2^20203122211 is an apocalyptic number.

20203122211 is a deficient number, since it is larger than the sum of its proper divisors (1).

20203122211 is an equidigital number, since it uses as much as digits as its factorization.

20203122211 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 96, while the sum is 16.

Adding to 20203122211 its reverse (11222130202), we get a palindrome (31425252413).

The spelling of 20203122211 in words is "twenty billion, two hundred three million, one hundred twenty-two thousand, two hundred eleven".