1200000220122 has 96 divisors (see below), whose sum is σ = 2763546379776. Its totient is φ = 344448165600.

The previous prime is 1200000220093. The next prime is 1200000220123. The reversal of 1200000220122 is 2210220000021.

It is a junction number, because it is equal to n+sod(n) for n = 1200000220098 and 1200000220107.

It is not an unprimeable number, because it can be changed into a prime (1200000220123) by changing a digit.

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 47 ways as a sum of consecutive naturals, for example, 3429297 + ... + 3762987.

It is an arithmetic number, because the mean of its divisors is an integer number (28786941456).

Almost surely, 2^{1200000220122} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1200000220122, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1381773189888).

1200000220122 is an abundant number, since it is smaller than the sum of its proper divisors (1563546159654).

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

1200000220122 is a wasteful number, since it uses less digits than its factorization.

1200000220122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 333856 (or 333833 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 12.

Adding to 1200000220122 its reverse (2210220000021), we get a palindrome (3410220220143).

The spelling of 1200000220122 in words is "one trillion, two hundred billion, two hundred twenty thousand, one hundred twenty-two".