12221202201121 has 2 divisors, whose sum is σ = 12221202201122. Its totient is φ = 12221202201120.

The previous prime is 12221202201083. The next prime is 12221202201151. The reversal of 12221202201121 is 12110220212221.

12221202201121 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 11754193976721 + 467008224400 = 3428439^2 + 683380^2 .

It is a cyclic number.

It is not a de Polignac number, because 12221202201121 - 2³¹ = 12219054717473 is a prime.

It is not a weakly prime, because it can be changed into another prime (12221202201151) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6110601100560 + 6110601100561.

It is an arithmetic number, because the mean of its divisors is an integer number (6110601100561).

Almost surely, 2^{12221202201121} is an apocalyptic number.

It is an amenable number.

12221202201121 is a deficient number, since it is larger than the sum of its proper divisors (1).

12221202201121 is an equidigital number, since it uses as much as digits as its factorization.

12221202201121 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 128, while the sum is 19.

Adding to 12221202201121 its reverse (12110220212221), we get a palindrome (24331422413342).

The spelling of 12221202201121 in words is "twelve trillion, two hundred twenty-one billion, two hundred two million, two hundred one thousand, one hundred twenty-one".