221030452445 has 64 divisors (see below), whose sum is σ = 311159439360. Its totient is φ = 149194560000.

The previous prime is 221030452411. The next prime is 221030452519. The reversal of 221030452445 is 544254030122.

It is not a de Polignac number, because 221030452445 - 2⁸ = 221030452189 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 4097600 + ... + 4151190.

It is an arithmetic number, because the mean of its divisors is an integer number (4861866240).

Almost surely, 2^221030452445 is an apocalyptic number.

It is an amenable number.

221030452445 is a deficient number, since it is larger than the sum of its proper divisors (90128986915).

221030452445 is a wasteful number, since it uses less digits than its factorization.

221030452445 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53738.

The product of its (nonzero) digits is 38400, while the sum is 32.

Adding to 221030452445 its reverse (544254030122), we get a palindrome (765284482567).

The spelling of 221030452445 in words is "two hundred twenty-one billion, thirty million, four hundred fifty-two thousand, four hundred forty-five".