111212030221 has 8 divisors (see below), whose sum is σ = 111530899040. Its totient is φ = 110893272912.

The previous prime is 111212030219. The next prime is 111212030273. The reversal of 111212030221 is 122030212111.

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 111212030221 - 2¹ = 111212030219 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 111212030195 and 111212030204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111212030621) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2229370 + ... + 2278708.

It is an arithmetic number, because the mean of its divisors is an integer number (13941362380).

Almost surely, 2^111212030221 is an apocalyptic number.

It is an amenable number.

111212030221 is a deficient number, since it is larger than the sum of its proper divisors (318868819).

111212030221 is an equidigital number, since it uses as much as digits as its factorization.

111212030221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55755.

The product of its (nonzero) digits is 48, while the sum is 16.

Adding to 111212030221 its reverse (122030212111), we get a palindrome (233242242332).

The spelling of 111212030221 in words is "one hundred eleven billion, two hundred twelve million, thirty thousand, two hundred twenty-one".