1121287675800 has 96 divisors (see below), whose sum is σ = 3479191603200. Its totient is φ = 298734794880.

The previous prime is 1121287675769. The next prime is 1121287675819. The reversal of 1121287675800 is 85767821211.

It is a self number, because there is not a number n which added to its sum of digits gives 1121287675800.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 207420 + ... + 1511819.

It is an arithmetic number, because the mean of its divisors is an integer number (36241579200).

Almost surely, 2^{1121287675800} is an apocalyptic number.

1121287675800 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1121287675800, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1739595801600).

1121287675800 is an abundant number, since it is smaller than the sum of its proper divisors (2357903927400).

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

1121287675800 is a wasteful number, since it uses less digits than its factorization.

1121287675800 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1720345 (or 1720336 counting only the distinct ones).

The product of its (nonzero) digits is 376320, while the sum is 48.

The spelling of 1121287675800 in words is "one trillion, one hundred twenty-one billion, two hundred eighty-seven million, six hundred seventy-five thousand, eight hundred".