123055550321 has 16 divisors (see below), whose sum is σ = 134588940288. Its totient is φ = 111580232400.

The previous prime is 123055550239. The next prime is 123055550357.

123055550321 is nontrivially palindromic in base 10.

It is a cyclic number.

It is not a de Polignac number, because 123055550321 - 2³⁴ = 105875681137 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (123055550021) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8844056 + ... + 8857958.

It is an arithmetic number, because the mean of its divisors is an integer number (8411808768).

Almost surely, 2^123055550321 is an apocalyptic number.

123055550321 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

123055550321 is a deficient number, since it is larger than the sum of its proper divisors (11533389967).

123055550321 is a wasteful number, since it uses less digits than its factorization.

123055550321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15932.

The product of its (nonzero) digits is 22500, while the sum is 32.

It can be divided in two parts, 123055 and 550321, that added together give a palindrome (673376).

The spelling of 123055550321 in words is "one hundred twenty-three billion, fifty-five million, five hundred fifty thousand, three hundred twenty-one".