12111302221 has 8 divisors (see below), whose sum is σ = 12751996320. Its totient is φ = 11470933872.

The previous prime is 12111302209. The next prime is 12111302233. The reversal of 12111302221 is 12220311121.

It is an interprime number because it is at equal distance from previous prime (12111302209) and next prime (12111302233).

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 12111302221 - 2¹⁵ = 12111269453 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12111302195 and 12111302204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12111302251) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3175 + ... + 155668.

It is an arithmetic number, because the mean of its divisors is an integer number (1593999540).

Almost surely, 2^12111302221 is an apocalyptic number.

It is an amenable number.

12111302221 is a deficient number, since it is larger than the sum of its proper divisors (640694099).

12111302221 is a wasteful number, since it uses less digits than its factorization.

12111302221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 162875.

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

Adding to 12111302221 its reverse (12220311121), we get a palindrome (24331613342).

The spelling of 12111302221 in words is "twelve billion, one hundred eleven million, three hundred two thousand, two hundred twenty-one".