1222131342121 has 2 divisors, whose sum is σ = 1222131342122. Its totient is φ = 1222131342120.

The previous prime is 1222131342101. The next prime is 1222131342127. The reversal of 1222131342121 is 1212431312221.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1220682474025 + 1448868096 = 1104845^2 + 38064^2 .

It is a cyclic number.

It is not a de Polignac number, because 1222131342121 - 2²¹ = 1222129244969 is a prime.

It is not a weakly prime, because it can be changed into another prime (1222131342127) 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, 611065671060 + 611065671061.

It is an arithmetic number, because the mean of its divisors is an integer number (611065671061).

Almost surely, 2^{1222131342121} is an apocalyptic number.

It is an amenable number.

1222131342121 is a deficient number, since it is larger than the sum of its proper divisors (1).

1222131342121 is an equidigital number, since it uses as much as digits as its factorization.

1222131342121 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1152, while the sum is 25.

Adding to 1222131342121 its reverse (1212431312221), we get a palindrome (2434562654342).

The spelling of 1222131342121 in words is "one trillion, two hundred twenty-two billion, one hundred thirty-one million, three hundred forty-two thousand, one hundred twenty-one".