221300233404550 has 24 divisors (see below), whose sum is σ = 411621756202296. Its totient is φ = 88519378938240.

The previous prime is 221300233404529. The next prime is 221300233404553. The reversal of 221300233404550 is 55404332003122.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221300233404553) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 11581572 + ... + 24015271.

It is an arithmetic number, because the mean of its divisors is an integer number (17150906508429).

Almost surely, 2^{221300233404550} is an apocalyptic number.

221300233404550 is a deficient number, since it is larger than the sum of its proper divisors (190321522797746).

221300233404550 is a wasteful number, since it uses less digits than its factorization.

221300233404550 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35721192 (or 35721187 counting only the distinct ones).

The product of its (nonzero) digits is 86400, while the sum is 34.

Adding to 221300233404550 its reverse (55404332003122), we get a palindrome (276704565407672).

The spelling of 221300233404550 in words is "two hundred twenty-one trillion, three hundred billion, two hundred thirty-three million, four hundred four thousand, five hundred fifty".