221043112 has 64 divisors (see below), whose sum is σ = 466171200. Its totient is φ = 97643520.

The previous prime is 221043101. The next prime is 221043127. The reversal of 221043112 is 211340122.

221043112 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 338178 + ... + 338830.

It is an arithmetic number, because the mean of its divisors is an integer number (7283925).

Almost surely, 2^221043112 is an apocalyptic number.

It is an amenable number.

221043112 is an abundant number, since it is smaller than the sum of its proper divisors (245128088).

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

221043112 is a wasteful number, since it uses less digits than its factorization.

221043112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 826 (or 822 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 16.

The square root of 221043112 is about 14867.5186900841. The cubic root of 221043112 is about 604.6336711809.

Adding to 221043112 its reverse (211340122), we get a palindrome (432383234).

The spelling of 221043112 in words is "two hundred twenty-one million, forty-three thousand, one hundred twelve".