1200111022222 has 32 divisors (see below), whose sum is σ = 2150522539200. Its totient is φ = 501788568960.

The previous prime is 1200111022199. The next prime is 1200111022267. The reversal of 1200111022222 is 2222201110021.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 1200111022196 and 1200111022205.

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 15 ways as a sum of consecutive naturals, for example, 21306423 + ... + 21362674.

It is an arithmetic number, because the mean of its divisors is an integer number (67203829350).

Almost surely, 2^{1200111022222} is an apocalyptic number.

1200111022222 is a deficient number, since it is larger than the sum of its proper divisors (950411516978).

1200111022222 is an equidigital number, since it uses as much as digits as its factorization.

1200111022222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42669161 (or 42669147 counting only the distinct ones).

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

Adding to 1200111022222 its reverse (2222201110021), we get a palindrome (3422312132243).

The spelling of 1200111022222 in words is "one trillion, two hundred billion, one hundred eleven million, twenty-two thousand, two hundred twenty-two".