2221494889856 has 256 divisors, whose sum is σ = 5066813606400. Its totient is φ = 960917422080.

The previous prime is 2221494889829. The next prime is 2221494889907. The reversal of 2221494889856 is 6589884941222.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 979926035 + ... + 979928301.

It is an arithmetic number, because the mean of its divisors is an integer number (19792240650).

Almost surely, 2^{2221494889856} 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 2221494889856, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2533406803200).

2221494889856 is an abundant number, since it is smaller than the sum of its proper divisors (2845318716544).

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

2221494889856 is a wasteful number, since it uses less digits than its factorization.

2221494889856 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2657 (or 2645 counting only the distinct ones).

The product of its digits is 159252480, while the sum is 68.

The spelling of 2221494889856 in words is "two trillion, two hundred twenty-one billion, four hundred ninety-four million, eight hundred eighty-nine thousand, eight hundred fifty-six".