221240204344 has 16 divisors (see below), whose sum is σ = 415517922000. Its totient is φ = 110435425152.

The previous prime is 221240204329. The next prime is 221240204389. The reversal of 221240204344 is 443402042122.

It is a congruent number.

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, 23079537 + ... + 23089120.

It is an arithmetic number, because the mean of its divisors is an integer number (25969870125).

Almost surely, 2^221240204344 is an apocalyptic number.

It is an amenable number.

221240204344 is a deficient number, since it is larger than the sum of its proper divisors (194277717656).

221240204344 is a wasteful number, since it uses less digits than its factorization.

221240204344 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46169262 (or 46169258 counting only the distinct ones).

The product of its (nonzero) digits is 12288, while the sum is 28.

Adding to 221240204344 its reverse (443402042122), we get a palindrome (664642246466).

The spelling of 221240204344 in words is "two hundred twenty-one billion, two hundred forty million, two hundred four thousand, three hundred forty-four".