17121233212111 has 16 divisors (see below), whose sum is σ = 19598069145600. Its totient is φ = 14652136503648.

The previous prime is 17121233212099. The next prime is 17121233212121. The reversal of 17121233212111 is 11121233212171.

It is not a de Polignac number, because 17121233212111 - 2⁷ = 17121233211983 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 17121233212111.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (17121233212121) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 77521906 + ... + 77742448.

It is an arithmetic number, because the mean of its divisors is an integer number (1224879321600).

Almost surely, 2^{17121233212111} is an apocalyptic number.

17121233212111 is a deficient number, since it is larger than the sum of its proper divisors (2476835933489).

17121233212111 is a wasteful number, since it uses less digits than its factorization.

17121233212111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 238038.

The product of its digits is 1008, while the sum is 28.

Adding to 17121233212111 its reverse (11121233212171), we get a palindrome (28242466424282).

The spelling of 17121233212111 in words is "seventeen trillion, one hundred twenty-one billion, two hundred thirty-three million, two hundred twelve thousand, one hundred eleven".