1121512245 has 32 divisors (see below), whose sum is σ = 2092627200. Its totient is φ = 512688960.

The previous prime is 1121512211. The next prime is 1121512289. The reversal of 1121512245 is 5422151211.

It is a happy number.

1121512245 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 1121512245 - 2¹² = 1121508149 is a prime.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 103846 + ... + 114135.

It is an arithmetic number, because the mean of its divisors is an integer number (65394600).

Almost surely, 2^1121512245 is an apocalyptic number.

1121512245 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1121512245 is a deficient number, since it is larger than the sum of its proper divisors (971114955).

1121512245 is an equidigital number, since it uses as much as digits as its factorization.

1121512245 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 218010 (or 217996 counting only the distinct ones).

The product of its digits is 800, while the sum is 24.

The square root of 1121512245 is about 33488.9869210760. The cubic root of 1121512245 is about 1038.9660103567.

Adding to 1121512245 its reverse (5422151211), we get a palindrome (6543663456).

The spelling of 1121512245 in words is "one billion, one hundred twenty-one million, five hundred twelve thousand, two hundred forty-five".