121131233211017 has 2 divisors, whose sum is σ = 121131233211018. Its totient is φ = 121131233211016.

The previous prime is 121131233210963. The next prime is 121131233211169. The reversal of 121131233211017 is 710112332131121.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 88620835410496 + 32510397800521 = 9413864^2 + 5701789^2 .

It is a cyclic number.

It is not a de Polignac number, because 121131233211017 - 2²⁰ = 121131232162441 is a prime.

It is not a weakly prime, because it can be changed into another prime (121131233211217) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60565616605508 + 60565616605509.

It is an arithmetic number, because the mean of its divisors is an integer number (60565616605509).

Almost surely, 2^{121131233211017} is an apocalyptic number.

It is an amenable number.

121131233211017 is a deficient number, since it is larger than the sum of its proper divisors (1).

121131233211017 is an equidigital number, since it uses as much as digits as its factorization.

121131233211017 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1512, while the sum is 29.

Adding to 121131233211017 its reverse (710112332131121), we get a palindrome (831243565342138).

The spelling of 121131233211017 in words is "one hundred twenty-one trillion, one hundred thirty-one billion, two hundred thirty-three million, two hundred eleven thousand, seventeen".