211320310013123 has 2 divisors, whose sum is σ = 211320310013124. Its totient is φ = 211320310013122.

The previous prime is 211320310013081. The next prime is 211320310013143. The reversal of 211320310013123 is 321310013023112.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 211320310013123 - 2²⁴ = 211320293235907 is a prime.

It is not a weakly prime, because it can be changed into another prime (211320310013143) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 105660155006561 + 105660155006562.

It is an arithmetic number, because the mean of its divisors is an integer number (105660155006562).

Almost surely, 2^{211320310013123} is an apocalyptic number.

211320310013123 is a deficient number, since it is larger than the sum of its proper divisors (1).

211320310013123 is an equidigital number, since it uses as much as digits as its factorization.

211320310013123 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 648, while the sum is 23.

Adding to 211320310013123 its reverse (321310013023112), we get a palindrome (532630323036235).

The spelling of 211320310013123 in words is "two hundred eleven trillion, three hundred twenty billion, three hundred ten million, thirteen thousand, one hundred twenty-three".