12221010011101 has 4 divisors (see below), whose sum is σ = 12221017230492. Its totient is φ = 12221002791712.

The previous prime is 12221010011099. The next prime is 12221010011117. The reversal of 12221010011101 is 10111001012221.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 4580755672900 + 7640254338201 = 2140270^2 + 2764101^2 .

It is a cyclic number.

It is not a de Polignac number, because 12221010011101 - 2¹ = 12221010011099 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 (12221010041101) 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, 455775 + ... + 4964851.

It is an arithmetic number, because the mean of its divisors is an integer number (3055254307623).

Almost surely, 2^{12221010011101} is an apocalyptic number.

It is an amenable number.

12221010011101 is a deficient number, since it is larger than the sum of its proper divisors (7219391).

12221010011101 is an equidigital number, since it uses as much as digits as its factorization.

12221010011101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7219390.

The product of its (nonzero) digits is 8, while the sum is 13.

Adding to 12221010011101 its reverse (10111001012221), we get a palindrome (22332011023322).

The spelling of 12221010011101 in words is "twelve trillion, two hundred twenty-one billion, ten million, eleven thousand, one hundred one".