123212212321 has 32 divisors (see below), whose sum is σ = 138339653760. Its totient is φ = 108801792000.

The previous prime is 123212212297. The next prime is 123212212363.

123212212321 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 123212212321 - 2⁵ = 123212212289 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 123212212292 and 123212212301.

It is not an unprimeable number, because it can be changed into a prime (123212212121) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 12439471 + ... + 12449371.

It is an arithmetic number, because the mean of its divisors is an integer number (4323114180).

Almost surely, 2^123212212321 is an apocalyptic number.

123212212321 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

123212212321 is a deficient number, since it is larger than the sum of its proper divisors (15127441439).

123212212321 is a wasteful number, since it uses less digits than its factorization.

123212212321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10225.

The product of its digits is 576, while the sum is 22.

It can be divided in two parts, 123212 and 212321, that added together give a palindrome (335533).

The spelling of 123212212321 in words is "one hundred twenty-three billion, two hundred twelve million, two hundred twelve thousand, three hundred twenty-one".