12122222111212 has 48 divisors (see below), whose sum is σ = 21776270255712. Its totient is φ = 5901051985920.

The previous prime is 12122222111191. The next prime is 12122222111221. The reversal of 12122222111212 is 21211122222121.

It is a super-2 number, since 2×12122222111212² (a number of 27 digits) contains 22 as substring.

It is a nude number because it is divisible by every one of its digits.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 212668188 + ... + 212725180.

It is an arithmetic number, because the mean of its divisors is an integer number (453672296994).

Almost surely, 2^{12122222111212} is an apocalyptic number.

It is an amenable number.

12122222111212 is a deficient number, since it is larger than the sum of its proper divisors (9654048144500).

12122222111212 is a wasteful number, since it uses less digits than its factorization.

12122222111212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 59698 (or 59696 counting only the distinct ones).

The product of its digits is 256, while the sum is 22.

Adding to 12122222111212 its reverse (21211122222121), we get a palindrome (33333344333333).

The spelling of 12122222111212 in words is "twelve trillion, one hundred twenty-two billion, two hundred twenty-two million, one hundred eleven thousand, two hundred twelve".