121113202117 has 2 divisors, whose sum is σ = 121113202118. Its totient is φ = 121113202116.

The previous prime is 121113202103. The next prime is 121113202123. The reversal of 121113202117 is 711202311121.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 117533094561 + 3580107556 = 342831^2 + 59834^2 .

It is a cyclic number.

It is not a de Polignac number, because 121113202117 - 2¹⁵ = 121113169349 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (121113202157) 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, 60556601058 + 60556601059.

It is an arithmetic number, because the mean of its divisors is an integer number (60556601059).

Almost surely, 2^121113202117 is an apocalyptic number.

It is an amenable number.

121113202117 is a deficient number, since it is larger than the sum of its proper divisors (1).

121113202117 is an equidigital number, since it uses as much as digits as its factorization.

121113202117 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 168, while the sum is 22.

Adding to 121113202117 its reverse (711202311121), we get a palindrome (832315513238).

The spelling of 121113202117 in words is "one hundred twenty-one billion, one hundred thirteen million, two hundred two thousand, one hundred seventeen".