12212330121 has 8 divisors (see below), whose sum is σ = 18092340960. Its totient is φ = 8141553396.

The previous prime is 12212330093. The next prime is 12212330131. The reversal of 12212330121 is 12103321221.

12212330121 is a `hidden beast` number, since 1 + 2 + 212 + 330 + 121 = 666.

It is not a de Polignac number, because 12212330121 - 2⁷ = 12212329993 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 12212330094 and 12212330103.

It is not an unprimeable number, because it can be changed into a prime (12212330131) 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, 226154235 + ... + 226154288.

It is an arithmetic number, because the mean of its divisors is an integer number (2261542620).

Almost surely, 2^12212330121 is an apocalyptic number.

It is an amenable number.

12212330121 is a deficient number, since it is larger than the sum of its proper divisors (5880010839).

12212330121 is an equidigital number, since it uses as much as digits as its factorization.

12212330121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 452308532 (or 452308526 counting only the distinct ones).

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

Adding to 12212330121 its reverse (12103321221), we get a palindrome (24315651342).

The spelling of 12212330121 in words is "twelve billion, two hundred twelve million, three hundred thirty thousand, one hundred twenty-one".