1121022200 has 24 divisors (see below), whose sum is σ = 2606377080. Its totient is φ = 448408800.

The previous prime is 1121022197. The next prime is 1121022209. The reversal of 1121022200 is 22201211.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1121022209) 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, 2802356 + ... + 2802755.

It is an arithmetic number, because the mean of its divisors is an integer number (108599045).

Almost surely, 2^1121022200 is an apocalyptic number.

1121022200 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1121022200 is an abundant number, since it is smaller than the sum of its proper divisors (1485354880).

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

1121022200 is a wasteful number, since it uses less digits than its factorization.

1121022200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5605127 (or 5605118 counting only the distinct ones).

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

The square root of 1121022200 is about 33481.6696118936. The cubic root of 1121022200 is about 1038.8146628421.

Adding to 1121022200 its reverse (22201211), we get a palindrome (1143223411).

The spelling of 1121022200 in words is "one billion, one hundred twenty-one million, twenty-two thousand, two hundred".