122621743493 has 2 divisors, whose sum is σ = 122621743494. Its totient is φ = 122621743492.

The previous prime is 122621743483. The next prime is 122621743591. The reversal of 122621743493 is 394347126221.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 103808329249 + 18813414244 = 322193^2 + 137162^2 .

It is a cyclic number.

It is not a de Polignac number, because 122621743493 - 2⁴ = 122621743477 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (122621743403) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61310871746 + 61310871747.

It is an arithmetic number, because the mean of its divisors is an integer number (61310871747).

Almost surely, 2^122621743493 is an apocalyptic number.

It is an amenable number.

122621743493 is a deficient number, since it is larger than the sum of its proper divisors (1).

122621743493 is an equidigital number, since it uses as much as digits as its factorization.

122621743493 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 435456, while the sum is 44.

The spelling of 122621743493 in words is "one hundred twenty-two billion, six hundred twenty-one million, seven hundred forty-three thousand, four hundred ninety-three".