1222122213101 has 2 divisors, whose sum is σ = 1222122213102. Its totient is φ = 1222122213100.

The previous prime is 1222122213089. The next prime is 1222122213127. The reversal of 1222122213101 is 1013122212221.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1043319244900 + 178802968201 = 1021430^2 + 422851^2 .

It is a cyclic number.

It is not a de Polignac number, because 1222122213101 - 2¹⁸ = 1222121950957 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1222122213161) 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, 611061106550 + 611061106551.

It is an arithmetic number, because the mean of its divisors is an integer number (611061106551).

Almost surely, 2^{1222122213101} is an apocalyptic number.

It is an amenable number.

1222122213101 is a deficient number, since it is larger than the sum of its proper divisors (1).

1222122213101 is an equidigital number, since it uses as much as digits as its factorization.

1222122213101 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 192, while the sum is 20.

Adding to 1222122213101 its reverse (1013122212221), we get a palindrome (2235244425322).

The spelling of 1222122213101 in words is "one trillion, two hundred twenty-two billion, one hundred twenty-two million, two hundred thirteen thousand, one hundred one".