2221840184020 has 12 divisors (see below), whose sum is σ = 4665864386484. Its totient is φ = 888736073600.

The previous prime is 2221840183999. The next prime is 2221840184023. The reversal of 2221840184020 is 204810481222.

It can be written as a sum of positive squares in 2 ways, for example, as 1178001988164 + 1043838195856 = 1085358^2 + 1021684^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2221840184023) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 55546004581 + ... + 55546004620.

It is an arithmetic number, because the mean of its divisors is an integer number (388822032207).

Almost surely, 2^{2221840184020} is an apocalyptic number.

2221840184020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2221840184020 is an abundant number, since it is smaller than the sum of its proper divisors (2444024202464).

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

2221840184020 is a wasteful number, since it uses less digits than its factorization.

2221840184020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 111092009210 (or 111092009208 counting only the distinct ones).

The product of its (nonzero) digits is 16384, while the sum is 34.

The spelling of 2221840184020 in words is "two trillion, two hundred twenty-one billion, eight hundred forty million, one hundred eighty-four thousand, twenty".