111301221 has 8 divisors (see below), whose sum is σ = 156212320. Its totient is φ = 70295472.

The previous prime is 111301213. The next prime is 111301237. The reversal of 111301221 is 122103111.

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

It is not a de Polignac number, because 111301221 - 2³ = 111301213 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 111301197 and 111301206.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111301321) 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, 976270 + ... + 976383.

It is an arithmetic number, because the mean of its divisors is an integer number (19526540).

Almost surely, 2^111301221 is an apocalyptic number.

It is an amenable number.

111301221 is a deficient number, since it is larger than the sum of its proper divisors (44911099).

111301221 is a wasteful number, since it uses less digits than its factorization.

111301221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1952675.

The product of its (nonzero) digits is 12, while the sum is 12.

The square root of 111301221 is about 10549.9393837121. The cubic root of 111301221 is about 481.0238864468.

Adding to 111301221 its reverse (122103111), we get a palindrome (233404332).

The spelling of 111301221 in words is "one hundred eleven million, three hundred one thousand, two hundred twenty-one".