1202111122117 has 2 divisors, whose sum is σ = 1202111122118. Its totient is φ = 1202111122116.

The previous prime is 1202111122019. The next prime is 1202111122171. The reversal of 1202111122117 is 7112211112021.

Together with next prime (1202111122171) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1042494092676 + 159617029441 = 1021026^2 + 399521^2 .

It is a cyclic number.

It is not a de Polignac number, because 1202111122117 - 2³¹ = 1199963638469 is a prime.

It is a super-2 number, since 2×1202111122117² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1202111123117) 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, 601055561058 + 601055561059.

It is an arithmetic number, because the mean of its divisors is an integer number (601055561059).

Almost surely, 2^{1202111122117} is an apocalyptic number.

It is an amenable number.

1202111122117 is a deficient number, since it is larger than the sum of its proper divisors (1).

1202111122117 is an equidigital number, since it uses as much as digits as its factorization.

1202111122117 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 112, while the sum is 22.

Adding to 1202111122117 its reverse (7112211112021), we get a palindrome (8314322234138).

The spelling of 1202111122117 in words is "one trillion, two hundred two billion, one hundred eleven million, one hundred twenty-two thousand, one hundred seventeen".