221138439484 has 48 divisors (see below), whose sum is σ = 412901596800. Its totient is φ = 103328761536.

The previous prime is 221138439461. The next prime is 221138439563. The reversal of 221138439484 is 484934831122.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4130374 + ... + 4183570.

It is an arithmetic number, because the mean of its divisors is an integer number (8602116600).

Almost surely, 2^221138439484 is an apocalyptic number.

It is an amenable number.

221138439484 is a deficient number, since it is larger than the sum of its proper divisors (191763157316).

221138439484 is a wasteful number, since it uses less digits than its factorization.

221138439484 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53962 (or 53960 counting only the distinct ones).

The product of its digits is 1327104, while the sum is 49.

The spelling of 221138439484 in words is "two hundred twenty-one billion, one hundred thirty-eight million, four hundred thirty-nine thousand, four hundred eighty-four".