1121601911808 has 704 divisors, whose sum is σ = 3634560184320. Its totient is φ = 300838551552.

The previous prime is 1121601911803. The next prime is 1121601911839. The reversal of 1121601911808 is 8081191061211.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1121601911803) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 3328195416 + ... + 3328195752.

Almost surely, 2^{1121601911808} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1121601911808, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1817280092160).

1121601911808 is an abundant number, since it is smaller than the sum of its proper divisors (2512958272512).

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

1121601911808 is a wasteful number, since it uses less digits than its factorization.

1121601911808 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 540 (or 522 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 39.

The spelling of 1121601911808 in words is "one trillion, one hundred twenty-one billion, six hundred one million, nine hundred eleven thousand, eight hundred eight".