123222301018 has 4 divisors (see below), whose sum is σ = 184833451530. Its totient is φ = 61611150508.

The previous prime is 123222301003. The next prime is 123222301019. The reversal of 123222301018 is 810103222321.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 810103222321 = 83 ⋅9760279787.

It can be written as a sum of positive squares in only one way, i.e., 118747092409 + 4475208609 = 344597^2 + 66897^2 .

It is a junction number, because it is equal to n+sod(n) for n = 123222300983 and 123222301001.

It is not an unprimeable number, because it can be changed into a prime (123222301019) 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, 30805575253 + ... + 30805575256.

Almost surely, 2^123222301018 is an apocalyptic number.

123222301018 is a deficient number, since it is larger than the sum of its proper divisors (61611150512).

123222301018 is an equidigital number, since it uses as much as digits as its factorization.

123222301018 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 61611150511.

The product of its (nonzero) digits is 1152, while the sum is 25.

Adding to 123222301018 its reverse (810103222321), we get a palindrome (933325523339).

The spelling of 123222301018 in words is "one hundred twenty-three billion, two hundred twenty-two million, three hundred one thousand, eighteen".