221131112111984 has 20 divisors (see below), whose sum is σ = 428853889258080. Its totient is φ = 110459140690560.

The previous prime is 221131112111981. The next prime is 221131112111993. The reversal of 221131112111984 is 489111211131122.

It is a happy number.

221131112111984 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221131112111981) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6650943197 + ... + 6650976444.

It is an arithmetic number, because the mean of its divisors is an integer number (21442694462904).

Almost surely, 2^{221131112111984} is an apocalyptic number.

It is an amenable number.

221131112111984 is a deficient number, since it is larger than the sum of its proper divisors (207722777146096).

221131112111984 is a wasteful number, since it uses less digits than its factorization.

221131112111984 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13301920688 (or 13301920682 counting only the distinct ones).

The product of its digits is 6912, while the sum is 38.

The spelling of 221131112111984 in words is "two hundred twenty-one trillion, one hundred thirty-one billion, one hundred twelve million, one hundred eleven thousand, nine hundred eighty-four".