221311222984 has 16 divisors (see below), whose sum is σ = 414967478400. Its totient is φ = 110653228752.

The previous prime is 221311222981. The next prime is 221311222999. The reversal of 221311222984 is 489222113122.

It is a happy number.

221311222984 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (221311222981) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 133677 + ... + 678595.

It is an arithmetic number, because the mean of its divisors is an integer number (25935467400).

Almost surely, 2^221311222984 is an apocalyptic number.

It is an amenable number.

221311222984 is a deficient number, since it is larger than the sum of its proper divisors (193656255416).

221311222984 is a wasteful number, since it uses less digits than its factorization.

221311222984 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 595692 (or 595688 counting only the distinct ones).

The product of its digits is 27648, while the sum is 37.

The spelling of 221311222984 in words is "two hundred twenty-one billion, three hundred eleven million, two hundred twenty-two thousand, nine hundred eighty-four".