221102994855648 has 192 divisors, whose sum is σ = 615614032051200. Its totient is φ = 69343625269248.

The previous prime is 221102994855647. The next prime is 221102994855697. The reversal of 221102994855648 is 846558499201122.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221102994855643) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 30623740 + ... + 37148612.

It is an arithmetic number, because the mean of its divisors is an integer number (3206323083600).

Almost surely, 2^{221102994855648} 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 221102994855648, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (307807016025600).

221102994855648 is an abundant number, since it is smaller than the sum of its proper divisors (394511037195552).

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

221102994855648 is a wasteful number, since it uses less digits than its factorization.

221102994855648 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6525161 (or 6525153 counting only the distinct ones).

The product of its (nonzero) digits is 99532800, while the sum is 66.

The spelling of 221102994855648 in words is "two hundred twenty-one trillion, one hundred two billion, nine hundred ninety-four million, eight hundred fifty-five thousand, six hundred forty-eight".