221304232342 has 16 divisors (see below), whose sum is σ = 335003487120. Its totient is φ = 109637043712.

The previous prime is 221304232339. The next prime is 221304232361. The reversal of 221304232342 is 243232403122.

It is a self number, because there is not a number n which added to its sum of digits gives 221304232342.

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, 539613 + ... + 856615.

It is an arithmetic number, because the mean of its divisors is an integer number (20937717945).

Almost surely, 2^221304232342 is an apocalyptic number.

221304232342 is a deficient number, since it is larger than the sum of its proper divisors (113699254778).

221304232342 is a wasteful number, since it uses less digits than its factorization.

221304232342 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 320207.

The product of its (nonzero) digits is 13824, while the sum is 28.

Adding to 221304232342 its reverse (243232403122), we get a palindrome (464536635464).

The spelling of 221304232342 in words is "two hundred twenty-one billion, three hundred four million, two hundred thirty-two thousand, three hundred forty-two".