221223313442 has 8 divisors (see below), whose sum is σ = 331842402732. Its totient is φ = 110609179200.

The previous prime is 221223313439. The next prime is 221223313481. The reversal of 221223313442 is 244313322122.

It can be written as a sum of positive squares in 2 ways, for example, as 150675172561 + 70548140881 = 388169^2 + 265609^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1125059 + ... + 1306982.

Almost surely, 2^221223313442 is an apocalyptic number.

221223313442 is a deficient number, since it is larger than the sum of its proper divisors (110619089290).

221223313442 is a wasteful number, since it uses less digits than its factorization.

221223313442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2477524.

The product of its digits is 13824, while the sum is 29.

Adding to 221223313442 its reverse (244313322122), we get a palindrome (465536635564).

The spelling of 221223313442 in words is "two hundred twenty-one billion, two hundred twenty-three million, three hundred thirteen thousand, four hundred forty-two".