221160912 has 200 divisors, whose sum is σ = 708540960. Its totient is φ = 59270400.

The previous prime is 221160883. The next prime is 221160923. The reversal of 221160912 is 219061122.

221160912 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a hoax number, since the sum of its digits (24) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 2189662 + ... + 2189762.

Almost surely, 2^221160912 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 221160912, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (354270480).

221160912 is an abundant number, since it is smaller than the sum of its proper divisors (487380048).

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

221160912 is a wasteful number, since it uses less digits than its factorization.

221160912 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 159 (or 132 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 24.

The square root of 221160912 is about 14871.4798187672. The cubic root of 221160912 is about 604.7410607859.

The spelling of 221160912 in words is "two hundred twenty-one million, one hundred sixty thousand, nine hundred twelve".