1121042200 has 48 divisors (see below), whose sum is σ = 2608650000. Its totient is φ = 448033920.

The previous prime is 1121042179. The next prime is 1121042227. The reversal of 1121042200 is 22401211.

It is a happy number.

It is a super-2 number, since 2×1121042200² = 2513471228361680000, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 406426 + ... + 409174.

It is an arithmetic number, because the mean of its divisors is an integer number (54346875).

Almost surely, 2^1121042200 is an apocalyptic number.

1121042200 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1121042200 is an abundant number, since it is smaller than the sum of its proper divisors (1487607800).

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

1121042200 is a wasteful number, since it uses less digits than its factorization.

1121042200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4804 (or 4795 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 13.

The square root of 1121042200 is about 33481.9682814496. The cubic root of 1121042200 is about 1038.8208405876.

Adding to 1121042200 its reverse (22401211), we get a palindrome (1143443411).

The spelling of 1121042200 in words is "one billion, one hundred twenty-one million, forty-two thousand, two hundred".