12210323121 has 48 divisors (see below), whose sum is σ = 18762831360. Its totient is φ = 7638209280.

The previous prime is 12210323107. The next prime is 12210323149. The reversal of 12210323121 is 12132301221.

12210323121 is a `hidden beast` number, since 1 + 221 + 0 + 323 + 121 = 666.

It is not a de Polignac number, because 12210323121 - 2⁹ = 12210322609 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 12210323094 and 12210323103.

It is not an unprimeable number, because it can be changed into a prime (12210323921) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 3229210 + ... + 3232988.

It is an arithmetic number, because the mean of its divisors is an integer number (390892320).

Almost surely, 2^12210323121 is an apocalyptic number.

It is an amenable number.

12210323121 is a deficient number, since it is larger than the sum of its proper divisors (6552508239).

12210323121 is a wasteful number, since it uses less digits than its factorization.

12210323121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4166 (or 4163 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

Adding to 12210323121 its reverse (12132301221), we get a palindrome (24342624342).

The spelling of 12210323121 in words is "twelve billion, two hundred ten million, three hundred twenty-three thousand, one hundred twenty-one".