221355364705050 has 96 divisors (see below), whose sum is σ = 552060006773184. Its totient is φ = 58694981184000.

The previous prime is 221355364705039. The next prime is 221355364705063. The reversal of 221355364705050 is 50507463553122.

221355364705050 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 229397590 + ... + 230360510.

It is an arithmetic number, because the mean of its divisors is an integer number (5750625070554).

Almost surely, 2^{221355364705050} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 221355364705050, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (276030003386592).

221355364705050 is an abundant number, since it is smaller than the sum of its proper divisors (330704642068134).

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

221355364705050 is a wasteful number, since it uses less digits than its factorization.

221355364705050 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 971584 (or 971579 counting only the distinct ones).

The product of its (nonzero) digits is 3780000, while the sum is 48.

The spelling of 221355364705050 in words is "two hundred twenty-one trillion, three hundred fifty-five billion, three hundred sixty-four million, seven hundred five thousand, fifty".