221054340250 has 64 divisors (see below), whose sum is σ = 417420555552. Its totient is φ = 87654336000.

The previous prime is 221054340203. The next prime is 221054340251. The reversal of 221054340250 is 52043450122.

It can be written as a sum of positive squares in 16 ways, for example, as 22791638961 + 198262701289 = 150969^2 + 445267^2 .

It is not an unprimeable number, because it can be changed into a prime (221054340251) 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 31 ways as a sum of consecutive naturals, for example, 13831264 + ... + 13847236.

Almost surely, 2^221054340250 is an apocalyptic number.

221054340250 is a deficient number, since it is larger than the sum of its proper divisors (196366215302).

221054340250 is a wasteful number, since it uses less digits than its factorization.

221054340250 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16468 (or 16458 counting only the distinct ones).

The product of its (nonzero) digits is 9600, while the sum is 28.

Adding to 221054340250 its reverse (52043450122), we get a palindrome (273097790372).

The spelling of 221054340250 in words is "two hundred twenty-one billion, fifty-four million, three hundred forty thousand, two hundred fifty".