1200000011222 has 16 divisors (see below), whose sum is σ = 1814384947200. Its totient is φ = 595206131688.

The previous prime is 1200000011207. The next prime is 1200000011227. The reversal of 1200000011222 is 2221100000021.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1200000011227) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1940279 + ... + 2482877.

It is an arithmetic number, because the mean of its divisors is an integer number (113399059200).

Almost surely, 2^{1200000011222} is an apocalyptic number.

1200000011222 is a deficient number, since it is larger than the sum of its proper divisors (614384935978).

1200000011222 is a wasteful number, since it uses less digits than its factorization.

1200000011222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 551435.

The product of its (nonzero) digits is 16, while the sum is 11.

Adding to 1200000011222 its reverse (2221100000021), we get a palindrome (3421100011243).

The spelling of 1200000011222 in words is "one trillion, two hundred billion, eleven thousand, two hundred twenty-two".