12221120101 has 2 divisors, whose sum is σ = 12221120102. Its totient is φ = 12221120100.

The previous prime is 12221120039. The next prime is 12221120129. The reversal of 12221120101 is 10102112221.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 11235788001 + 985332100 = 105999^2 + 31390^2 .

It is a cyclic number.

It is not a de Polignac number, because 12221120101 - 2⁷ = 12221119973 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12221120201) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6110560050 + 6110560051.

It is an arithmetic number, because the mean of its divisors is an integer number (6110560051).

Almost surely, 2^12221120101 is an apocalyptic number.

It is an amenable number.

12221120101 is a deficient number, since it is larger than the sum of its proper divisors (1).

12221120101 is an equidigital number, since it uses as much as digits as its factorization.

12221120101 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 12221120101 its reverse (10102112221), we get a palindrome (22323232322).

The spelling of 12221120101 in words is "twelve billion, two hundred twenty-one million, one hundred twenty thousand, one hundred one".