221340344230 has 64 divisors (see below), whose sum is σ = 413777040768. Its totient is φ = 85199662080.

The previous prime is 221340344207. The next prime is 221340344249. The reversal of 221340344230 is 32443043122.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 6987087 + ... + 7018693.

It is an arithmetic number, because the mean of its divisors is an integer number (6465266262).

Almost surely, 2^221340344230 is an apocalyptic number.

221340344230 is a deficient number, since it is larger than the sum of its proper divisors (192436696538).

221340344230 is a wasteful number, since it uses less digits than its factorization.

221340344230 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31921.

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

Adding to 221340344230 its reverse (32443043122), we get a palindrome (253783387352).

The spelling of 221340344230 in words is "two hundred twenty-one billion, three hundred forty million, three hundred forty-four thousand, two hundred thirty".