212013103123 has 2 divisors, whose sum is σ = 212013103124. Its totient is φ = 212013103122.

The previous prime is 212013103121. The next prime is 212013103139. The reversal of 212013103123 is 321301310212.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 212013103123 - 2¹ = 212013103121 is a prime.

Together with 212013103121, it forms a pair of twin primes.

It is a self number, because there is not a number n which added to its sum of digits gives 212013103123.

It is not a weakly prime, because it can be changed into another prime (212013103121) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106006551561 + 106006551562.

It is an arithmetic number, because the mean of its divisors is an integer number (106006551562).

Almost surely, 2^212013103123 is an apocalyptic number.

212013103123 is a deficient number, since it is larger than the sum of its proper divisors (1).

212013103123 is an equidigital number, since it uses as much as digits as its factorization.

212013103123 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 216, while the sum is 19.

Adding to 212013103123 its reverse (321301310212), we get a palindrome (533314413335).

The spelling of 212013103123 in words is "two hundred twelve billion, thirteen million, one hundred three thousand, one hundred twenty-three".