17352121121 has 2 divisors, whose sum is σ = 17352121122. Its totient is φ = 17352121120.

The previous prime is 17352121099. The next prime is 17352121123. The reversal of 17352121121 is 12112125371.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 17308296721 + 43824400 = 131561^2 + 6620^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-17352121121 is a prime.

It is a super-2 number, since 2×17352121121² (a number of 21 digits) contains 22 as substring.

Together with 17352121123, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (17352121123) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8676060560 + 8676060561.

It is an arithmetic number, because the mean of its divisors is an integer number (8676060561).

Almost surely, 2^17352121121 is an apocalyptic number.

It is an amenable number.

17352121121 is a deficient number, since it is larger than the sum of its proper divisors (1).

17352121121 is an equidigital number, since it uses as much as digits as its factorization.

17352121121 is an evil number, because the sum of its binary digits is even.

The product of its digits is 840, while the sum is 26.

Adding to 17352121121 its reverse (12112125371), we get a palindrome (29464246492).

The spelling of 17352121121 in words is "seventeen billion, three hundred fifty-two million, one hundred twenty-one thousand, one hundred twenty-one".