221232401322 has 64 divisors (see below), whose sum is σ = 474467621760. Its totient is φ = 68525512704.

The previous prime is 221232401309. The next prime is 221232401353. The reversal of 221232401322 is 223104232122.

221232401322 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 221232401292 and 221232401301.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3111238 + ... + 3181550.

It is an arithmetic number, because the mean of its divisors is an integer number (7413556590).

Almost surely, 2^221232401322 is an apocalyptic number.

221232401322 is an abundant number, since it is smaller than the sum of its proper divisors (253235220438).

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

221232401322 is a wasteful number, since it uses less digits than its factorization.

221232401322 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 70727.

The product of its (nonzero) digits is 2304, while the sum is 24.

Adding to 221232401322 its reverse (223104232122), we get a palindrome (444336633444).

The spelling of 221232401322 in words is "two hundred twenty-one billion, two hundred thirty-two million, four hundred one thousand, three hundred twenty-two".