10199161081 has 2 divisors, whose sum is σ = 10199161082. Its totient is φ = 10199161080.

The previous prime is 10199161079. The next prime is 10199161103. The reversal of 10199161081 is 18016199101.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 9603020025 + 596141056 = 97995^2 + 24416^2 .

It is an emirp because it is prime and its reverse (18016199101) is a distict prime. It is also a bemirp because it and its reverse can be mirrored producing other two distinct primes, 18019166101 and 10166191081.

It is a cyclic number.

It is not a de Polignac number, because 10199161081 - 2¹ = 10199161079 is a prime.

It is a super-2 number, since 2×10199161081² (a number of 21 digits) contains 22 as substring.

Together with 10199161079, it forms a pair of twin primes.

It is a self number, because there is not a number n which added to its sum of digits gives 10199161081.

It is not a weakly prime, because it can be changed into another prime (10199161051) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5099580540 + 5099580541.

It is an arithmetic number, because the mean of its divisors is an integer number (5099580541).

Almost surely, 2^10199161081 is an apocalyptic number.

It is an amenable number.

10199161081 is a deficient number, since it is larger than the sum of its proper divisors (1).

10199161081 is an equidigital number, since it uses as much as digits as its factorization.

10199161081 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3888, while the sum is 37.

The spelling of 10199161081 in words is "ten billion, one hundred ninety-nine million, one hundred sixty-one thousand, eighty-one".