101212506523 has 2 divisors, whose sum is σ = 101212506524. Its totient is φ = 101212506522.

The previous prime is 101212506517. The next prime is 101212506533. The reversal of 101212506523 is 325605212101.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-101212506523 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 101212506491 and 101212506500.

It is not a weakly prime, because it can be changed into another prime (101212506533) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50606253261 + 50606253262.

It is an arithmetic number, because the mean of its divisors is an integer number (50606253262).

Almost surely, 2^101212506523 is an apocalyptic number.

101212506523 is a deficient number, since it is larger than the sum of its proper divisors (1).

101212506523 is an equidigital number, since it uses as much as digits as its factorization.

101212506523 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3600, while the sum is 28.

Adding to 101212506523 its reverse (325605212101), we get a palindrome (426817718624).

The spelling of 101212506523 in words is "one hundred one billion, two hundred twelve million, five hundred six thousand, five hundred twenty-three".