1212020575823 has 2 divisors, whose sum is σ = 1212020575824. Its totient is φ = 1212020575822.

The previous prime is 1212020575747. The next prime is 1212020575853. The reversal of 1212020575823 is 3285750202121.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1212020575823 - 2²⁸ = 1211752140367 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1212020575853) 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, 606010287911 + 606010287912.

It is an arithmetic number, because the mean of its divisors is an integer number (606010287912).

Almost surely, 2^{1212020575823} is an apocalyptic number.

1212020575823 is a deficient number, since it is larger than the sum of its proper divisors (1).

1212020575823 is an equidigital number, since it uses as much as digits as its factorization.

1212020575823 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 67200, while the sum is 38.

Adding to 1212020575823 its reverse (3285750202121), we get a palindrome (4497770777944).

The spelling of 1212020575823 in words is "one trillion, two hundred twelve billion, twenty million, five hundred seventy-five thousand, eight hundred twenty-three".