211121020021103 has 2 divisors, whose sum is σ = 211121020021104. Its totient is φ = 211121020021102.

The previous prime is 211121020021049. The next prime is 211121020021183. The reversal of 211121020021103 is 301120020121112.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 211121020021103 - 2³² = 211116725053807 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (211121020021183) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 105560510010551 + 105560510010552.

It is an arithmetic number, because the mean of its divisors is an integer number (105560510010552).

Almost surely, 2^{211121020021103} is an apocalyptic number.

211121020021103 is a deficient number, since it is larger than the sum of its proper divisors (1).

211121020021103 is an equidigital number, since it uses as much as digits as its factorization.

211121020021103 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 48, while the sum is 17.

Adding to 211121020021103 its reverse (301120020121112), we get a palindrome (512241040142215).

The spelling of 211121020021103 in words is "two hundred eleven trillion, one hundred twenty-one billion, twenty million, twenty-one thousand, one hundred three".