12011101221013 has 4 divisors (see below), whose sum is σ = 12011301342700. Its totient is φ = 12010901099328.

The previous prime is 12011101221011. The next prime is 12011101221029. The reversal of 12011101221013 is 31012210111021.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 4181301101329 + 7829800119684 = 2044823^2 + 2798178^2 .

It is a cyclic number.

It is not a de Polignac number, because 12011101221013 - 2¹ = 12011101221011 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12011101221011) 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, 99970788 + ... + 100090861.

It is an arithmetic number, because the mean of its divisors is an integer number (3002825335675).

Almost surely, 2^{12011101221013} is an apocalyptic number.

It is an amenable number.

12011101221013 is a deficient number, since it is larger than the sum of its proper divisors (200121687).

12011101221013 is an equidigital number, since it uses as much as digits as its factorization.

12011101221013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 200121686.

The product of its (nonzero) digits is 24, while the sum is 16.

Adding to 12011101221013 its reverse (31012210111021), we get a palindrome (43023311332034).

The spelling of 12011101221013 in words is "twelve trillion, eleven billion, one hundred one million, two hundred twenty-one thousand, thirteen".