221344802112 has 56 divisors (see below), whose sum is σ = 669304524736. Its totient is φ = 63241371648.

The previous prime is 221344802099. The next prime is 221344802123. The reversal of 221344802112 is 211208443122.

It is a tau number, because it is divible by the number of its divisors (56).

It is a super-3 number, since 3×221344802112³ (a number of 35 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 221344802112.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 82344193 + ... + 82346880.

Almost surely, 2^221344802112 is an apocalyptic number.

It is an amenable number.

221344802112 is an abundant number, since it is smaller than the sum of its proper divisors (447959722624).

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

221344802112 is a wasteful number, since it uses less digits than its factorization.

221344802112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 164691095 (or 164691085 counting only the distinct ones).

The product of its (nonzero) digits is 6144, while the sum is 30.

The spelling of 221344802112 in words is "two hundred twenty-one billion, three hundred forty-four million, eight hundred two thousand, one hundred twelve".