221500050 has 48 divisors (see below), whose sum is σ = 550372512. Its totient is φ = 58953600.

The previous prime is 221500039. The next prime is 221500063. The reversal of 221500050 is 50005122.

221500050 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 102582 + ... + 104718.

It is an arithmetic number, because the mean of its divisors is an integer number (11466094).

Almost surely, 2^221500050 is an apocalyptic number.

221500050 is an abundant number, since it is smaller than the sum of its proper divisors (328872462).

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

221500050 is a wasteful number, since it uses less digits than its factorization.

221500050 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2843 (or 2838 counting only the distinct ones).

The product of its (nonzero) digits is 100, while the sum is 15.

The square root of 221500050 is about 14882.8777459200. The cubic root of 221500050 is about 605.0500152172.

Adding to 221500050 its reverse (50005122), we get a palindrome (271505172).

The spelling of 221500050 in words is "two hundred twenty-one million, five hundred thousand, fifty".