122403239993 has 2 divisors, whose sum is σ = 122403239994. Its totient is φ = 122403239992.

The previous prime is 122403239989. The next prime is 122403240053. The reversal of 122403239993 is 399932304221.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 69736661929 + 52666578064 = 264077^2 + 229492^2 .

It is an emirp because it is prime and its reverse (399932304221) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 122403239993 - 2² = 122403239989 is a prime.

It is not a weakly prime, because it can be changed into another prime (122403239963) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61201619996 + 61201619997.

It is an arithmetic number, because the mean of its divisors is an integer number (61201619997).

Almost surely, 2^122403239993 is an apocalyptic number.

It is an amenable number.

122403239993 is a deficient number, since it is larger than the sum of its proper divisors (1).

122403239993 is an equidigital number, since it uses as much as digits as its factorization.

122403239993 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 629856, while the sum is 47.

The spelling of 122403239993 in words is "one hundred twenty-two billion, four hundred three million, two hundred thirty-nine thousand, nine hundred ninety-three".