1200100222222 has 16 divisors (see below), whose sum is σ = 1963991894832. Its totient is φ = 545446897920.

The previous prime is 1200100222171. The next prime is 1200100222271. The reversal of 1200100222222 is 2222220010021.

It is a junction number, because it is equal to n+sod(n) for n = 1200100222196 and 1200100222205.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2429013 + ... + 2881024.

It is an arithmetic number, because the mean of its divisors is an integer number (122749493427).

Almost surely, 2^{1200100222222} is an apocalyptic number.

1200100222222 is a deficient number, since it is larger than the sum of its proper divisors (763891672610).

1200100222222 is a wasteful number, since it uses less digits than its factorization.

1200100222222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5320323.

The product of its (nonzero) digits is 128, while the sum is 16.

Adding to 1200100222222 its reverse (2222220010021), we get a palindrome (3422320232243).

The spelling of 1200100222222 in words is "one trillion, two hundred billion, one hundred million, two hundred twenty-two thousand, two hundred twenty-two".