1121123485878 has 64 divisors (see below), whose sum is σ = 2634776100864. Its totient is φ = 314480628000.

The previous prime is 1121123485873. The next prime is 1121123485931. The reversal of 1121123485878 is 8785843211211.

It is a self number, because there is not a number n which added to its sum of digits gives 1121123485878.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1121123485873) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 11865088 + ... + 11959203.

It is an arithmetic number, because the mean of its divisors is an integer number (41168376576).

Almost surely, 2^{1121123485878} is an apocalyptic number.

1121123485878 is an abundant number, since it is smaller than the sum of its proper divisors (1513652614986).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1121123485878 is a wasteful number, since it uses less digits than its factorization.

1121123485878 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23824361.

The product of its digits is 860160, while the sum is 51.

The spelling of 1121123485878 in words is "one trillion, one hundred twenty-one billion, one hundred twenty-three million, four hundred eighty-five thousand, eight hundred seventy-eight".