1121440425555 has 16 divisors (see below), whose sum is σ = 1794679155360. Its totient is φ = 597976735488.

The previous prime is 1121440425551. The next prime is 1121440425649. The reversal of 1121440425555 is 5555240441211.

It is not a de Polignac number, because 1121440425555 - 2² = 1121440425551 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1121440425551) by changing a digit.

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, 7727260 + ... + 7871049.

It is an arithmetic number, because the mean of its divisors is an integer number (112167447210).

Almost surely, 2^{1121440425555} is an apocalyptic number.

1121440425555 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1121440425555 is a deficient number, since it is larger than the sum of its proper divisors (673238729805).

1121440425555 is a wasteful number, since it uses less digits than its factorization.

1121440425555 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15603110.

The product of its (nonzero) digits is 160000, while the sum is 39.

Adding to 1121440425555 its reverse (5555240441211), we get a palindrome (6676680866766).

The spelling of 1121440425555 in words is "one trillion, one hundred twenty-one billion, four hundred forty million, four hundred twenty-five thousand, five hundred fifty-five".