211210121122103 has 2 divisors, whose sum is σ = 211210121122104. Its totient is φ = 211210121122102.

The previous prime is 211210121121931. The next prime is 211210121122157. The reversal of 211210121122103 is 301221121012112.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 211210121122103 - 2⁸ = 211210121121847 is a prime.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (211210111122103) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 105605060561051 + 105605060561052.

It is an arithmetic number, because the mean of its divisors is an integer number (105605060561052).

Almost surely, 2^{211210121122103} is an apocalyptic number.

211210121122103 is a deficient number, since it is larger than the sum of its proper divisors (1).

211210121122103 is an equidigital number, since it uses as much as digits as its factorization.

211210121122103 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 96, while the sum is 20.

Adding to 211210121122103 its reverse (301221121012112), we get a palindrome (512431242134215).

The spelling of 211210121122103 in words is "two hundred eleven trillion, two hundred ten billion, one hundred twenty-one million, one hundred twenty-two thousand, one hundred three".