2199395871481 has 2 divisors, whose sum is σ = 2199395871482. Its totient is φ = 2199395871480.

The previous prime is 2199395871479. The next prime is 2199395871503. The reversal of 2199395871481 is 1841785939912.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1773848395881 + 425547475600 = 1331859^2 + 652340^2 .

It is a cyclic number.

It is not a de Polignac number, because 2199395871481 - 2¹ = 2199395871479 is a prime.

It is a super-2 number, since 2×2199395871481² (a number of 25 digits) contains 22 as substring.

Together with 2199395871479, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (2199395851481) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1099697935740 + 1099697935741.

It is an arithmetic number, because the mean of its divisors is an integer number (1099697935741).

Almost surely, 2^{2199395871481} is an apocalyptic number.

It is an amenable number.

2199395871481 is a deficient number, since it is larger than the sum of its proper divisors (1).

2199395871481 is an equidigital number, since it uses as much as digits as its factorization.

2199395871481 is an evil number, because the sum of its binary digits is even.

The product of its digits is 39191040, while the sum is 67.

The spelling of 2199395871481 in words is "two trillion, one hundred ninety-nine billion, three hundred ninety-five million, eight hundred seventy-one thousand, four hundred eighty-one".