1121006250 has 384 divisors, whose sum is σ = 3884751360. Its totient is φ = 233280000.

The previous prime is 1121006209. The next prime is 1121006273. The reversal of 1121006250 is 526001211.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a Curzon number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 191 ways as a sum of consecutive naturals, for example, 15356214 + ... + 15356286.

It is an arithmetic number, because the mean of its divisors is an integer number (10116540).

Almost surely, 2^1121006250 is an apocalyptic number.

1121006250 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 1121006250, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1942375680).

1121006250 is an abundant number, since it is smaller than the sum of its proper divisors (2763745110).

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

1121006250 is an equidigital number, since it uses as much as digits as its factorization.

1121006250 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 129 (or 103 counting only the distinct ones).

The product of its (nonzero) digits is 120, while the sum is 18.

The square root of 1121006250 is about 33481.4314210131. The cubic root of 1121006250 is about 1038.8097360373.

Adding to 1121006250 its reverse (526001211), we get a palindrome (1647007461).

The spelling of 1121006250 in words is "one billion, one hundred twenty-one million, six thousand, two hundred fifty".