221113350 has 144 divisors (see below), whose sum is σ = 618388992. Its totient is φ = 56609280.

The previous prime is 221113331. The next prime is 221113363. The reversal of 221113350 is 53311122.

221113350 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×221113350² = 97782227096445000, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 1740987 + ... + 1741113.

It is an arithmetic number, because the mean of its divisors is an integer number (4294368).

Almost surely, 2^221113350 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 221113350, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (309194496).

221113350 is an abundant number, since it is smaller than the sum of its proper divisors (397275642).

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

221113350 is a wasteful number, since it uses less digits than its factorization.

221113350 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 271 (or 263 counting only the distinct ones).

The product of its (nonzero) digits is 180, while the sum is 18.

The square root of 221113350 is about 14869.8806316661. The cubic root of 221113350 is about 604.6977065961.

Adding to 221113350 its reverse (53311122), we get a palindrome (274424472).

The spelling of 221113350 in words is "two hundred twenty-one million, one hundred thirteen thousand, three hundred fifty".