122618333993 has 4 divisors (see below), whose sum is σ = 125609025108. Its totient is φ = 119627642880.

The previous prime is 122618333947. The next prime is 122618334017. The reversal of 122618333993 is 399333816221.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 399333816221 = 84229 ⋅4741049.

It can be written as a sum of positive squares in 2 ways, for example, as 74434571929 + 48183762064 = 272827^2 + 219508^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-122618333993 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (122618333933) 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 in 3 ways as a sum of consecutive naturals, for example, 1495345496 + ... + 1495345577.

It is an arithmetic number, because the mean of its divisors is an integer number (31402256277).

Almost surely, 2^122618333993 is an apocalyptic number.

It is an amenable number.

122618333993 is a deficient number, since it is larger than the sum of its proper divisors (2990691115).

122618333993 is an equidigital number, since it uses as much as digits as its factorization.

122618333993 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2990691114.

The product of its digits is 1259712, while the sum is 50.

The spelling of 122618333993 in words is "one hundred twenty-two billion, six hundred eighteen million, three hundred thirty-three thousand, nine hundred ninety-three".