221050477308 has 24 divisors (see below), whose sum is σ = 533570118480. Its totient is φ = 71142682240.

The previous prime is 221050477261. The next prime is 221050477309. The reversal of 221050477308 is 803774050122.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221050477309) 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 7 ways as a sum of consecutive naturals, for example, 317600913 + ... + 317601608.

It is an arithmetic number, because the mean of its divisors is an integer number (22232088270).

Almost surely, 2^221050477308 is an apocalyptic number.

It is an amenable number.

221050477308 is an abundant number, since it is smaller than the sum of its proper divisors (312519641172).

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

221050477308 is a wasteful number, since it uses less digits than its factorization.

221050477308 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 635202557 (or 635202555 counting only the distinct ones).

The product of its (nonzero) digits is 94080, while the sum is 39.

The spelling of 221050477308 in words is "two hundred twenty-one billion, fifty million, four hundred seventy-seven thousand, three hundred eight".