211110003121 has 2 divisors, whose sum is σ = 211110003122. Its totient is φ = 211110003120.

The previous prime is 211110003119. The next prime is 211110003133. The reversal of 211110003121 is 121300011112.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 129848519025 + 81261484096 = 360345^2 + 285064^2 .

It is a cyclic number.

It is not a de Polignac number, because 211110003121 - 2¹ = 211110003119 is a prime.

Together with 211110003119, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (211110003421) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 105555001560 + 105555001561.

It is an arithmetic number, because the mean of its divisors is an integer number (105555001561).

Almost surely, 2^211110003121 is an apocalyptic number.

It is an amenable number.

211110003121 is a deficient number, since it is larger than the sum of its proper divisors (1).

211110003121 is an equidigital number, since it uses as much as digits as its factorization.

211110003121 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 12, while the sum is 13.

Adding to 211110003121 its reverse (121300011112), we get a palindrome (332410014233).

The spelling of 211110003121 in words is "two hundred eleven billion, one hundred ten million, three thousand, one hundred twenty-one".