1109168042220 has 576 divisors, whose sum is σ = 4229761536000. Its totient is φ = 238329112320.

The previous prime is 1109168042197. The next prime is 1109168042231. The reversal of 1109168042220 is 222408619011.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a polite number, since it can be written in 191 ways as a sum of consecutive naturals, for example, 84669231 + ... + 84682329.

It is an arithmetic number, because the mean of its divisors is an integer number (7343336000).

Almost surely, 2^{1109168042220} is an apocalyptic number.

1109168042220 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 1109168042220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2114880768000).

1109168042220 is an abundant number, since it is smaller than the sum of its proper divisors (3120593493780).

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

1109168042220 is a wasteful number, since it uses less digits than its factorization.

1109168042220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13280 (or 13266 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 36.

The spelling of 1109168042220 in words is "one trillion, one hundred nine billion, one hundred sixty-eight million, forty-two thousand, two hundred twenty".