1121786861228 has 24 divisors (see below), whose sum is σ = 2160545259600. Its totient is φ = 505390699520.

The previous prime is 1121786861219. The next prime is 1121786861249. The reversal of 1121786861228 is 8221686871211.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 1121786861228.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 112805453 + ... + 112815396.

It is an arithmetic number, because the mean of its divisors is an integer number (90022719150).

Almost surely, 2^{1121786861228} is an apocalyptic number.

It is an amenable number.

1121786861228 is a deficient number, since it is larger than the sum of its proper divisors (1038758398372).

1121786861228 is a wasteful number, since it uses less digits than its factorization.

1121786861228 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 225620977 (or 225620975 counting only the distinct ones).

The product of its digits is 1032192, while the sum is 53.

The spelling of 1121786861228 in words is "one trillion, one hundred twenty-one billion, seven hundred eighty-six million, eight hundred sixty-one thousand, two hundred twenty-eight".