221902543016 has 64 divisors (see below), whose sum is σ = 519126036480. Its totient is φ = 86390066880.

The previous prime is 221902543013. The next prime is 221902543021. The reversal of 221902543016 is 610345209122.

It is not an unprimeable number, because it can be changed into a prime (221902543013) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 681701 + ... + 953163.

It is an arithmetic number, because the mean of its divisors is an integer number (8111344320).

Almost surely, 2^221902543016 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 221902543016, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (259563018240).

221902543016 is an abundant number, since it is smaller than the sum of its proper divisors (297223493464).

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

221902543016 is a wasteful number, since it uses less digits than its factorization.

221902543016 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 272814 (or 272810 counting only the distinct ones).

The product of its (nonzero) digits is 25920, while the sum is 35.

The spelling of 221902543016 in words is "two hundred twenty-one billion, nine hundred two million, five hundred forty-three thousand, sixteen".