12210112122 has 64 divisors (see below), whose sum is σ = 26991740160. Its totient is φ = 3658996224.

The previous prime is 12210112091. The next prime is 12210112129. The reversal of 12210112122 is 22121101221.

It is a super-2 number, since 2×12210112122² (a number of 21 digits) contains 22 as substring.

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 31 ways as a sum of consecutive naturals, for example, 555579 + ... + 577137.

It is an arithmetic number, because the mean of its divisors is an integer number (421745940).

Almost surely, 2^12210112122 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12210112122, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (13495870080).

12210112122 is an abundant number, since it is smaller than the sum of its proper divisors (14781628038).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12210112122 is a wasteful number, since it uses less digits than its factorization.

12210112122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21767.

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 12210112122 its reverse (22121101221), we get a palindrome (34331213343).

The spelling of 12210112122 in words is "twelve billion, two hundred ten million, one hundred twelve thousand, one hundred twenty-two".