10119910991 has 2 divisors, whose sum is σ = 10119910992. Its totient is φ = 10119910990.

The previous prime is 10119910973. The next prime is 10119911051. The reversal of 10119910991 is 19901991101.

It is a happy number.

It is a weak prime.

It is an emirp because it is prime and its reverse (19901991101) is a distict prime. It is also a bemirp because it and its reverse can be mirrored producing other two distinct primes, 16601661101 and 10116610661.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-10119910991 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (10119919991) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5059955495 + 5059955496.

It is an arithmetic number, because the mean of its divisors is an integer number (5059955496).

Almost surely, 2^10119910991 is an apocalyptic number.

10119910991 is a deficient number, since it is larger than the sum of its proper divisors (1).

10119910991 is an equidigital number, since it uses as much as digits as its factorization.

10119910991 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6561, while the sum is 41.

The spelling of 10119910991 in words is "ten billion, one hundred nineteen million, nine hundred ten thousand, nine hundred ninety-one".