211121010011 has 2 divisors, whose sum is σ = 211121010012. Its totient is φ = 211121010010.

The previous prime is 211121009989. The next prime is 211121010043. The reversal of 211121010011 is 110010121112.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-211121010011 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 211121009974 and 211121010001.

It is not a weakly prime, because it can be changed into another prime (211121016011) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 105560505005 + 105560505006.

It is an arithmetic number, because the mean of its divisors is an integer number (105560505006).

Almost surely, 2^211121010011 is an apocalyptic number.

211121010011 is a deficient number, since it is larger than the sum of its proper divisors (1).

211121010011 is an equidigital number, since it uses as much as digits as its factorization.

211121010011 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4, while the sum is 11.

Adding to 211121010011 its reverse (110010121112), we get a palindrome (321131131123).

The spelling of 211121010011 in words is "two hundred eleven billion, one hundred twenty-one million, ten thousand, eleven".