221112331 has 8 divisors (see below), whose sum is σ = 243602928. Its totient is φ = 199020000.

The previous prime is 221112313. The next prime is 221112337. The reversal of 221112331 is 133211122.

221112331 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 221112331 - 2¹¹ = 221110283 is a prime.

It is a super-2 number, since 2×221112331² = 97781325840507122, which contains 22 as substring.

It is a Duffinian number.

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

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 98400 + ... + 100621.

It is an arithmetic number, because the mean of its divisors is an integer number (30450366).

Almost surely, 2^221112331 is an apocalyptic number.

221112331 is a deficient number, since it is larger than the sum of its proper divisors (22490597).

221112331 is a wasteful number, since it uses less digits than its factorization.

221112331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 199133.

The product of its digits is 72, while the sum is 16.

The square root of 221112331 is about 14869.8463677336. The cubic root of 221112331 is about 604.6967776791.

Adding to 221112331 its reverse (133211122), we get a palindrome (354323453).

It can be divided in two parts, 22111 and 2331, that added together give a palindrome (24442).

The spelling of 221112331 in words is "two hundred twenty-one million, one hundred twelve thousand, three hundred thirty-one".