1121222202200 has 96 divisors (see below), whose sum is σ = 2720626716960. Its totient is φ = 428919321600.

The previous prime is 1121222202187. The next prime is 1121222202209. The reversal of 1121222202200 is 22022221211.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1121222202209) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 34764482 + ... + 34796718.

It is an arithmetic number, because the mean of its divisors is an integer number (28339861635).

Almost surely, 2^{1121222202200} is an apocalyptic number.

1121222202200 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1121222202200, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1360313358480).

1121222202200 is an abundant number, since it is smaller than the sum of its proper divisors (1599404514760).

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

1121222202200 is a wasteful number, since it uses less digits than its factorization.

1121222202200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39837 (or 39828 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 17.

Adding to 1121222202200 its reverse (22022221211), we get a palindrome (1143244423411).

The spelling of 1121222202200 in words is "one trillion, one hundred twenty-one billion, two hundred twenty-two million, two hundred two thousand, two hundred".