1200022121122 has 32 divisors (see below), whose sum is σ = 1983720119040. Its totient is φ = 539906100480.

The previous prime is 1200022121119. The next prime is 1200022121131. The reversal of 1200022121122 is 2211212200021.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 1200022121096 and 1200022121105.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2086743 + ... + 2598949.

It is an arithmetic number, because the mean of its divisors is an integer number (61991253720).

Almost surely, 2^{1200022121122} is an apocalyptic number.

1200022121122 is a deficient number, since it is larger than the sum of its proper divisors (783697997918).

1200022121122 is a wasteful number, since it uses less digits than its factorization.

1200022121122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 513306.

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

Adding to 1200022121122 its reverse (2211212200021), we get a palindrome (3411234321143).

It can be divided in two parts, 12000 and 22121122, that added together give a palindrome (22133122).

The spelling of 1200022121122 in words is "one trillion, two hundred billion, twenty-two million, one hundred twenty-one thousand, one hundred twenty-two".