123212013321 has 8 divisors (see below), whose sum is σ = 164285238304. Its totient is φ = 82140065280.

The previous prime is 123212013307. The next prime is 123212013343. The reversal of 123212013321 is 123310212321.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 123212013321 - 2⁷ = 123212013193 is a prime.

It is a super-2 number, since 2×123212013321² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (123212013391) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 65215 + ... + 500676.

It is an arithmetic number, because the mean of its divisors is an integer number (20535654788).

Almost surely, 2^123212013321 is an apocalyptic number.

It is an amenable number.

123212013321 is a deficient number, since it is larger than the sum of its proper divisors (41073224983).

123212013321 is an equidigital number, since it uses as much as digits as its factorization.

123212013321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 638471.

The product of its (nonzero) digits is 432, while the sum is 21.

Adding to 123212013321 its reverse (123310212321), we get a palindrome (246522225642).

The spelling of 123212013321 in words is "one hundred twenty-three billion, two hundred twelve million, thirteen thousand, three hundred twenty-one".