201121212211 has 2 divisors, whose sum is σ = 201121212212. Its totient is φ = 201121212210.

The previous prime is 201121212203. The next prime is 201121212239. The reversal of 201121212211 is 112212121102.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 201121212211 - 2³ = 201121212203 is a prime.

It is not a weakly prime, because it can be changed into another prime (201121213211) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 100560606105 + 100560606106.

It is an arithmetic number, because the mean of its divisors is an integer number (100560606106).

Almost surely, 2^201121212211 is an apocalyptic number.

201121212211 is a deficient number, since it is larger than the sum of its proper divisors (1).

201121212211 is an equidigital number, since it uses as much as digits as its factorization.

201121212211 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 201121212211 its reverse (112212121102), we get a palindrome (313333333313).

The spelling of 201121212211 in words is "two hundred one billion, one hundred twenty-one million, two hundred twelve thousand, two hundred eleven".