2197694130881 has 2 divisors, whose sum is σ = 2197694130882. Its totient is φ = 2197694130880.

The previous prime is 2197694130839. The next prime is 2197694130883. The reversal of 2197694130881 is 1880314967912.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1908379236481 + 289314894400 = 1381441^2 + 537880^2 .

It is a cyclic number.

It is not a de Polignac number, because 2197694130881 - 2³⁰ = 2196620389057 is a prime.

It is a super-2 number, since 2×2197694130881² (a number of 25 digits) contains 22 as substring.

Together with 2197694130883, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2197694130881.

It is not a weakly prime, because it can be changed into another prime (2197694130883) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1098847065440 + 1098847065441.

It is an arithmetic number, because the mean of its divisors is an integer number (1098847065441).

Almost surely, 2^{2197694130881} is an apocalyptic number.

It is an amenable number.

2197694130881 is a deficient number, since it is larger than the sum of its proper divisors (1).

2197694130881 is an equidigital number, since it uses as much as digits as its factorization.

2197694130881 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5225472, while the sum is 59.

The spelling of 2197694130881 in words is "two trillion, one hundred ninety-seven billion, six hundred ninety-four million, one hundred thirty thousand, eight hundred eighty-one".