12011222220101 has 6 divisors (see below), whose sum is σ = 13006234711890. Its totient is φ = 11087282049168.

The previous prime is 12011222220077. The next prime is 12011222220149. The reversal of 12011222220101 is 10102222211021.

It can be written as a sum of positive squares in 3 ways, for example, as 123387100225 + 11887835119876 = 351265^2 + 3447874^2 .

It is not a de Polignac number, because 12011222220101 - 2¹⁰ = 12011222219077 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 12011222220101.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12011222220161) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 35536160246 + ... + 35536160583.

It is an arithmetic number, because the mean of its divisors is an integer number (2167705785315).

Almost surely, 2^{12011222220101} is an apocalyptic number.

It is an amenable number.

12011222220101 is a deficient number, since it is larger than the sum of its proper divisors (995012491789).

12011222220101 is an equidigital number, since it uses as much as digits as its factorization.

12011222220101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 71072320855 (or 71072320842 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 12011222220101 its reverse (10102222211021), we get a palindrome (22113444431122).

The spelling of 12011222220101 in words is "twelve trillion, eleven billion, two hundred twenty-two million, two hundred twenty thousand, one hundred one".