12220300121 has 2 divisors, whose sum is σ = 12220300122. Its totient is φ = 12220300120.

The previous prime is 12220300069. The next prime is 12220300133. The reversal of 12220300121 is 12100302221.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 11320960000 + 899340121 = 106400^2 + 29989^2 .

It is a cyclic number.

It is not a de Polignac number, because 12220300121 - 2²² = 12216105817 is a prime.

It is a super-2 number, since 2×12220300121² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 12220300096 and 12220300105.

It is not a weakly prime, because it can be changed into another prime (12220300181) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6110150060 + 6110150061.

It is an arithmetic number, because the mean of its divisors is an integer number (6110150061).

Almost surely, 2^12220300121 is an apocalyptic number.

It is an amenable number.

12220300121 is a deficient number, since it is larger than the sum of its proper divisors (1).

12220300121 is an equidigital number, since it uses as much as digits as its factorization.

12220300121 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 48, while the sum is 14.

Adding to 12220300121 its reverse (12100302221), we get a palindrome (24320602342).

The spelling of 12220300121 in words is "twelve billion, two hundred twenty million, three hundred thousand, one hundred twenty-one".