221849112 has 16 divisors (see below), whose sum is σ = 554622840. Its totient is φ = 73949696.

The previous prime is 221849081. The next prime is 221849119. The reversal of 221849112 is 211948122.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 221849112.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221849119) 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, 4621833 + ... + 4621880.

Almost surely, 2^221849112 is an apocalyptic number.

It is an amenable number.

221849112 is an abundant number, since it is smaller than the sum of its proper divisors (332773728).

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

221849112 is a wasteful number, since it uses less digits than its factorization.

221849112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9243722 (or 9243718 counting only the distinct ones).

The product of its digits is 2304, while the sum is 30.

The square root of 221849112 is about 14894.6000953366. The cubic root of 221849112 is about 605.3676812434.

The spelling of 221849112 in words is "two hundred twenty-one million, eight hundred forty-nine thousand, one hundred twelve".