221955789983 has 8 divisors (see below), whose sum is σ = 229121187840. Its totient is φ = 214790738040.

The previous prime is 221955789953. The next prime is 221955790039. The reversal of 221955789983 is 389987559122.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 221955789983 - 2³⁶ = 153236313247 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221955789953) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2077178 + ... + 2181416.

It is an arithmetic number, because the mean of its divisors is an integer number (28640148480).

Almost surely, 2^221955789983 is an apocalyptic number.

221955789983 is a deficient number, since it is larger than the sum of its proper divisors (7165397857).

221955789983 is a wasteful number, since it uses less digits than its factorization.

221955789983 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 172957.

The product of its digits is 97977600, while the sum is 68.

The spelling of 221955789983 in words is "two hundred twenty-one billion, nine hundred fifty-five million, seven hundred eighty-nine thousand, nine hundred eighty-three".