1121254815 has 16 divisors (see below), whose sum is σ = 1818584928. Its totient is φ = 589810176.

The previous prime is 1121254793. The next prime is 1121254829. The reversal of 1121254815 is 5184521211.

It is not a de Polignac number, because 1121254815 - 2⁸ = 1121254559 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 (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 510894 + ... + 513083.

It is an arithmetic number, because the mean of its divisors is an integer number (113661558).

Almost surely, 2^1121254815 is an apocalyptic number.

1121254815 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1121254815 is a deficient number, since it is larger than the sum of its proper divisors (697330113).

1121254815 is a wasteful number, since it uses less digits than its factorization.

1121254815 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1024058.

The product of its digits is 3200, while the sum is 30.

The square root of 1121254815 is about 33485.1431981409. The cubic root of 1121254815 is about 1038.8865101141.

The spelling of 1121254815 in words is "one billion, one hundred twenty-one million, two hundred fifty-four thousand, eight hundred fifteen".