1121245250 has 16 divisors (see below), whose sum is σ = 2098971576. Its totient is φ = 448498000.

The previous prime is 1121245247. The next prime is 1121245259. The reversal of 1121245250 is 525421211.

It can be written as a sum of positive squares in 4 ways, for example, as 403487569 + 717757681 = 20087^2 + 26791^2 .

It is not an unprimeable number, because it can be changed into a prime (1121245259) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2242241 + ... + 2242740.

Almost surely, 2^1121245250 is an apocalyptic number.

1121245250 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1121245250 is a deficient number, since it is larger than the sum of its proper divisors (977726326).

1121245250 is an equidigital number, since it uses as much as digits as its factorization.

1121245250 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4484998 (or 4484988 counting only the distinct ones).

The product of its (nonzero) digits is 800, while the sum is 23.

The square root of 1121245250 is about 33485.0003733015. Note that the first 3 decimals coincide. The cubic root of 1121245250 is about 1038.8835559900.

Adding to 1121245250 its reverse (525421211), we get a palindrome (1646666461).

The spelling of 1121245250 in words is "one billion, one hundred twenty-one million, two hundred forty-five thousand, two hundred fifty".