12001222223122 has 16 divisors (see below), whose sum is σ = 19726428056832. Its totient is φ = 5430638671920.

The previous prime is 12001222223099. The next prime is 12001222223147. The reversal of 12001222223122 is 22132222210021.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is a junction number, because it is equal to n+sod(n) for n = 12001222223093 and 12001222223102.

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, 1223111913 + ... + 1223121724.

It is an arithmetic number, because the mean of its divisors is an integer number (1232901753552).

Almost surely, 2^{12001222223122} is an apocalyptic number.

12001222223122 is a deficient number, since it is larger than the sum of its proper divisors (7725205833710).

12001222223122 is a wasteful number, since it uses less digits than its factorization.

12001222223122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2446233873.

The product of its (nonzero) digits is 768, while the sum is 22.

Adding to 12001222223122 its reverse (22132222210021), we get a palindrome (34133444433143).

The spelling of 12001222223122 in words is "twelve trillion, one billion, two hundred twenty-two million, two hundred twenty-three thousand, one hundred twenty-two".