12222121011212 has 24 divisors (see below), whose sum is σ = 24445725583104. Its totient is φ = 5237733956112.

The previous prime is 12222121011181. The next prime is 12222121011251. The reversal of 12222121011212 is 21211012122221.

12222121011212 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12776198 + ... + 13699469.

It is an arithmetic number, because the mean of its divisors is an integer number (1018571899296).

Almost surely, 2^{12222121011212} is an apocalyptic number.

It is an amenable number.

12222121011212 is an abundant number, since it is smaller than the sum of its proper divisors (12223604571892).

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

12222121011212 is a wasteful number, since it uses less digits than its factorization.

12222121011212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26492165 (or 26492163 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 20.

Adding to 12222121011212 its reverse (21211012122221), we get a palindrome (33433133133433).

The spelling of 12222121011212 in words is "twelve trillion, two hundred twenty-two billion, one hundred twenty-one million, eleven thousand, two hundred twelve".