1222011121129 has 2 divisors, whose sum is σ = 1222011121130. Its totient is φ = 1222011121128.

The previous prime is 1222011121021. The next prime is 1222011121141. The reversal of 1222011121129 is 9211211102221.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 673633845504 + 548377275625 = 820752^2 + 740525^2 .

It is a cyclic number.

It is not a de Polignac number, because 1222011121129 - 2¹⁹ = 1222010596841 is a prime.

It is a super-2 number, since 2×1222011121129² (a number of 25 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1222011121189) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 611005560564 + 611005560565.

It is an arithmetic number, because the mean of its divisors is an integer number (611005560565).

Almost surely, 2^{1222011121129} is an apocalyptic number.

It is an amenable number.

1222011121129 is a deficient number, since it is larger than the sum of its proper divisors (1).

1222011121129 is an equidigital number, since it uses as much as digits as its factorization.

1222011121129 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 288, while the sum is 25.

The spelling of 1222011121129 in words is "one trillion, two hundred twenty-two billion, eleven million, one hundred twenty-one thousand, one hundred twenty-nine".