221998319244 has 96 divisors (see below), whose sum is σ = 619958976000. Its totient is φ = 68292341568.

The previous prime is 221998319239. The next prime is 221998319293. The reversal of 221998319244 is 442913899122.

It is a happy number.

221998319244 is a `hidden beast` number, since 2 + 219 + 98 + 319 + 24 + 4 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

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, 7678087 + ... + 7706945.

It is an arithmetic number, because the mean of its divisors is an integer number (6457906000).

Almost surely, 2^221998319244 is an apocalyptic number.

It is an amenable number.

221998319244 is an abundant number, since it is smaller than the sum of its proper divisors (397960656756).

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

221998319244 is a wasteful number, since it uses less digits than its factorization.

221998319244 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34364 (or 34356 counting only the distinct ones).

The product of its digits is 2239488, while the sum is 54.

The spelling of 221998319244 in words is "two hundred twenty-one billion, nine hundred ninety-eight million, three hundred nineteen thousand, two hundred forty-four".