1121025135 has 32 divisors (see below), whose sum is σ = 1902431232. Its totient is φ = 561738240.

The previous prime is 1121025119. The next prime is 1121025187. The reversal of 1121025135 is 5315201211.

It is not a de Polignac number, because 1121025135 - 2⁴ = 1121025119 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 157422 + ... + 164388.

It is an arithmetic number, because the mean of its divisors is an integer number (59450976).

Almost surely, 2^1121025135 is an apocalyptic number.

1121025135 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1121025135 is a deficient number, since it is larger than the sum of its proper divisors (781406097).

1121025135 is a wasteful number, since it uses less digits than its factorization.

1121025135 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7623.

The product of its (nonzero) digits is 300, while the sum is 21.

The square root of 1121025135 is about 33481.7134418178. The cubic root of 1121025135 is about 1038.8155694308.

Adding to 1121025135 its reverse (5315201211), we get a palindrome (6436226346).

The spelling of 1121025135 in words is "one billion, one hundred twenty-one million, twenty-five thousand, one hundred thirty-five".