12210112121 has 8 divisors (see below), whose sum is σ = 12667561920. Its totient is φ = 11755089808.

The previous prime is 12210112091. The next prime is 12210112129. The reversal of 12210112121 is 12121101221.

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

It is a cyclic number.

It is not a de Polignac number, because 12210112121 - 2¹⁰ = 12210111097 is a prime.

It is a super-2 number, since 2×12210112121² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 12210112096 and 12210112105.

It is not an unprimeable number, because it can be changed into a prime (12210112129) 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, 596621 + ... + 616746.

It is an arithmetic number, because the mean of its divisors is an integer number (1583445240).

Almost surely, 2^12210112121 is an apocalyptic number.

It is an amenable number.

12210112121 is a deficient number, since it is larger than the sum of its proper divisors (457449799).

12210112121 is a wasteful number, since it uses less digits than its factorization.

12210112121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1213743.

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 12210112121 its reverse (12121101221), we get a palindrome (24331213342).

The spelling of 12210112121 in words is "twelve billion, two hundred ten million, one hundred twelve thousand, one hundred twenty-one".