211121210002123 has 2 divisors, whose sum is σ = 211121210002124. Its totient is φ = 211121210002122.

The previous prime is 211121210002111. The next prime is 211121210002141. The reversal of 211121210002123 is 321200012121112.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 211121210002123 - 2²⁵ = 211121176447691 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 211121210002123.

It is not a weakly prime, because it can be changed into another prime (211121210092123) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 105560605001061 + 105560605001062.

It is an arithmetic number, because the mean of its divisors is an integer number (105560605001062).

Almost surely, 2^{211121210002123} is an apocalyptic number.

211121210002123 is a deficient number, since it is larger than the sum of its proper divisors (1).

211121210002123 is an equidigital number, since it uses as much as digits as its factorization.

211121210002123 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 96, while the sum is 19.

Adding to 211121210002123 its reverse (321200012121112), we get a palindrome (532321222123235).

The spelling of 211121210002123 in words is "two hundred eleven trillion, one hundred twenty-one billion, two hundred ten million, two thousand, one hundred twenty-three".