1122222221200 has 30 divisors (see below), whose sum is σ = 2696138887394. Its totient is φ = 448888888320.

The previous prime is 1122222221179. The next prime is 1122222221207. The reversal of 1122222221200 is 21222222211.

It can be written as a sum of positive squares in 3 ways, for example, as 16351248384 + 1105870972816 = 127872^2 + 1051604^2 .

It is not an unprimeable number, because it can be changed into a prime (1122222221207) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1402777377 + ... + 1402778176.

Almost surely, 2^{1122222221200} is an apocalyptic number.

1122222221200 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1122222221200 is an abundant number, since it is smaller than the sum of its proper divisors (1573916666194).

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

1122222221200 is a wasteful number, since it uses less digits than its factorization.

1122222221200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2805555571 (or 2805555560 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 19.

Adding to 1122222221200 its reverse (21222222211), we get a palindrome (1143444443411).

The spelling of 1122222221200 in words is "one trillion, one hundred twenty-two billion, two hundred twenty-two million, two hundred twenty-one thousand, two hundred".