122543120813 has 2 divisors, whose sum is σ = 122543120814. Its totient is φ = 122543120812.

The previous prime is 122543120789. The next prime is 122543120827. The reversal of 122543120813 is 318021345221.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 111718383049 + 10824737764 = 334243^2 + 104042^2 .

It is a cyclic number.

It is not a de Polignac number, because 122543120813 - 2¹⁴ = 122543104429 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 122543120813.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (122543120873) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61271560406 + 61271560407.

It is an arithmetic number, because the mean of its divisors is an integer number (61271560407).

Almost surely, 2^122543120813 is an apocalyptic number.

It is an amenable number.

122543120813 is a deficient number, since it is larger than the sum of its proper divisors (1).

122543120813 is an equidigital number, since it uses as much as digits as its factorization.

122543120813 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 11520, while the sum is 32.

The spelling of 122543120813 in words is "one hundred twenty-two billion, five hundred forty-three million, one hundred twenty thousand, eight hundred thirteen".