16969291121 has 2 divisors, whose sum is σ = 16969291122. Its totient is φ = 16969291120.

The previous prime is 16969291099. The next prime is 16969291123. The reversal of 16969291121 is 12119296961.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 9518148721 + 7451142400 = 97561^2 + 86320^2 .

It is a cyclic number.

It is not a de Polignac number, because 16969291121 - 2⁶ = 16969291057 is a prime.

It is a super-2 number, since 2×16969291121² (a number of 21 digits) contains 22 as substring.

Together with 16969291123, 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 (16969291123) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8484645560 + 8484645561.

It is an arithmetic number, because the mean of its divisors is an integer number (8484645561).

Almost surely, 2^16969291121 is an apocalyptic number.

It is an amenable number.

16969291121 is a deficient number, since it is larger than the sum of its proper divisors (1).

16969291121 is an equidigital number, since it uses as much as digits as its factorization.

16969291121 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 104976, while the sum is 47.

The spelling of 16969291121 in words is "sixteen billion, nine hundred sixty-nine million, two hundred ninety-one thousand, one hundred twenty-one".