1222121122129 has 2 divisors, whose sum is σ = 1222121122130. Its totient is φ = 1222121122128.

The previous prime is 1222121122087. The next prime is 1222121122151. The reversal of 1222121122129 is 9212211212221.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1006219641025 + 215901481104 = 1003105^2 + 464652^2 .

It is a cyclic number.

It is not a de Polignac number, because 1222121122129 - 2¹⁵ = 1222121089361 is a prime.

It is a super-2 number, since 2×1222121122129² (a number of 25 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1222121122097 and 1222121122106.

It is not a weakly prime, because it can be changed into another prime (1222121122199) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 611060561064 + 611060561065.

It is an arithmetic number, because the mean of its divisors is an integer number (611060561065).

Almost surely, 2^{1222121122129} is an apocalyptic number.

It is an amenable number.

1222121122129 is a deficient number, since it is larger than the sum of its proper divisors (1).

1222121122129 is an equidigital number, since it uses as much as digits as its factorization.

1222121122129 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1152, while the sum is 28.

The spelling of 1222121122129 in words is "one trillion, two hundred twenty-two billion, one hundred twenty-one million, one hundred twenty-two thousand, one hundred twenty-nine".