1202122180121 has 2 divisors, whose sum is σ = 1202122180122. Its totient is φ = 1202122180120.

The previous prime is 1202122180109. The next prime is 1202122180169. The reversal of 1202122180121 is 1210812212021.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1159918230025 + 42203950096 = 1076995^2 + 205436^2 .

It is a cyclic number.

It is not a de Polignac number, because 1202122180121 - 2¹⁸ = 1202121917977 is a prime.

It is not a weakly prime, because it can be changed into another prime (1202122180321) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 601061090060 + 601061090061.

It is an arithmetic number, because the mean of its divisors is an integer number (601061090061).

Almost surely, 2^{1202122180121} is an apocalyptic number.

It is an amenable number.

1202122180121 is a deficient number, since it is larger than the sum of its proper divisors (1).

1202122180121 is an equidigital number, since it uses as much as digits as its factorization.

1202122180121 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 256, while the sum is 23.

Adding to 1202122180121 its reverse (1210812212021), we get a palindrome (2412934392142).

The spelling of 1202122180121 in words is "one trillion, two hundred two billion, one hundred twenty-two million, one hundred eighty thousand, one hundred twenty-one".