12011221113 has 8 divisors (see below), whose sum is σ = 16018828800. Its totient is φ = 8005547088.

The previous prime is 12011221111. The next prime is 12011221129. The reversal of 12011221113 is 31112211021.

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

It is not a de Polignac number, because 12011221113 - 2¹ = 12011221111 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 12011221092 and 12011221101.

It is not an unprimeable number, because it can be changed into a prime (12011221111) 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, 468858 + ... + 493811.

It is an arithmetic number, because the mean of its divisors is an integer number (2002353600).

Almost surely, 2^12011221113 is an apocalyptic number.

It is an amenable number.

12011221113 is a deficient number, since it is larger than the sum of its proper divisors (4007607687).

12011221113 is an equidigital number, since it uses as much as digits as its factorization.

12011221113 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 966831.

The product of its (nonzero) digits is 24, while the sum is 15.

Adding to 12011221113 its reverse (31112211021), we get a palindrome (43123432134).

The spelling of 12011221113 in words is "twelve billion, eleven million, two hundred twenty-one thousand, one hundred thirteen".