221223342432 has 48 divisors (see below), whose sum is σ = 581753984112. Its totient is φ = 73608706560.

The previous prime is 221223342419. The next prime is 221223342463. The reversal of 221223342432 is 234243322122.

It is a tau number, because it is divible by the number of its divisors (48).

It is a nude number because it is divisible by every one of its digits.

It is a self number, because there is not a number n which added to its sum of digits gives 221223342432.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2015119 + ... + 2122062.

It is an arithmetic number, because the mean of its divisors is an integer number (12119874669).

Almost surely, 2^221223342432 is an apocalyptic number.

It is an amenable number.

221223342432 is an abundant number, since it is smaller than the sum of its proper divisors (360530641680).

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

221223342432 is a wasteful number, since it uses less digits than its factorization.

221223342432 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4137751 (or 4137743 counting only the distinct ones).

The product of its digits is 27648, while the sum is 30.

Adding to 221223342432 its reverse (234243322122), we get a palindrome (455466664554).

The spelling of 221223342432 in words is "two hundred twenty-one billion, two hundred twenty-three million, three hundred forty-two thousand, four hundred thirty-two".