12111045301221 has 4 divisors (see below), whose sum is σ = 16148060401632. Its totient is φ = 8074030200812.

The previous prime is 12111045301181. The next prime is 12111045301339. The reversal of 12111045301221 is 12210354011121.

It is a happy number.

12111045301221 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 12111045301221 - 2¹⁷ = 12111045170149 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 12111045301191 and 12111045301200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12111045371221) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2018507550201 + ... + 2018507550206.

It is an arithmetic number, because the mean of its divisors is an integer number (4037015100408).

Almost surely, 2^{12111045301221} is an apocalyptic number.

It is an amenable number.

12111045301221 is a deficient number, since it is larger than the sum of its proper divisors (4037015100411).

12111045301221 is an equidigital number, since it uses as much as digits as its factorization.

12111045301221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4037015100410.

The product of its (nonzero) digits is 480, while the sum is 24.

Adding to 12111045301221 its reverse (12210354011121), we get a palindrome (24321399312342).

The spelling of 12111045301221 in words is "twelve trillion, one hundred eleven billion, forty-five million, three hundred one thousand, two hundred twenty-one".