2001222011122 has 8 divisors (see below), whose sum is σ = 3065701804416. Its totient is φ = 979321409652.

The previous prime is 2001222011081. The next prime is 2001222011177. The reversal of 2001222011122 is 2211102221002.

It is a happy number.

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

It is a junction number, because it is equal to n+sod(n) for n = 2001222011096 and 2001222011105.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10644797838 + ... + 10644798025.

It is an arithmetic number, because the mean of its divisors is an integer number (383212725552).

Almost surely, 2^{2001222011122} is an apocalyptic number.

2001222011122 is a deficient number, since it is larger than the sum of its proper divisors (1064479793294).

2001222011122 is a wasteful number, since it uses less digits than its factorization.

2001222011122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21289595912.

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 2001222011122 its reverse (2211102221002), we get a palindrome (4212324232124).

The spelling of 2001222011122 in words is "two trillion, one billion, two hundred twenty-two million, eleven thousand, one hundred twenty-two".