221112330 has 32 divisors (see below), whose sum is σ = 531529344. Its totient is φ = 58867776.

The previous prime is 221112313. The next prime is 221112337. The reversal of 221112330 is 33211122.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is not an unprimeable number, because it can be changed into a prime (221112337) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13947 + ... + 25233.

It is an arithmetic number, because the mean of its divisors is an integer number (16610292).

Almost surely, 2^221112330 is an apocalyptic number.

221112330 is an abundant number, since it is smaller than the sum of its proper divisors (310417014).

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

221112330 is a wasteful number, since it uses less digits than its factorization.

221112330 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11950.

The product of its (nonzero) digits is 72, while the sum is 15.

The square root of 221112330 is about 14869.8463341085. The cubic root of 221112330 is about 604.6967767675.

Adding to 221112330 its reverse (33211122), we get a palindrome (254323452).

It can be divided in two parts, 2211 and 12330, that added together give a palindrome (14541).

The spelling of 221112330 in words is "two hundred twenty-one million, one hundred twelve thousand, three hundred thirty".