12220201121 has 2 divisors, whose sum is σ = 12220201122. Its totient is φ = 12220201120.

The previous prime is 12220201099. The next prime is 12220201141. The reversal of 12220201121 is 12110202221.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 12220197025 + 4096 = 110545^2 + 64^2 .

It is a cyclic number.

It is not a de Polignac number, because 12220201121 - 2⁶ = 12220201057 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 12220201096 and 12220201105.

It is not a weakly prime, because it can be changed into another prime (12220201141) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6110100560 + 6110100561.

It is an arithmetic number, because the mean of its divisors is an integer number (6110100561).

Almost surely, 2^12220201121 is an apocalyptic number.

It is an amenable number.

12220201121 is a deficient number, since it is larger than the sum of its proper divisors (1).

12220201121 is an equidigital number, since it uses as much as digits as its factorization.

12220201121 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 12220201121 its reverse (12110202221), we get a palindrome (24330403342).

The spelling of 12220201121 in words is "twelve billion, two hundred twenty million, two hundred one thousand, one hundred twenty-one".