10111091 has 2 divisors, whose sum is σ = 10111092. Its totient is φ = 10111090.

The previous prime is 10111081. The next prime is 10111093. The reversal of 10111091 is 19011101.

It is a happy number.

It is a strong prime.

It is an emirp because it is prime and its reverse (19011101) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-10111091 is a prime.

It is a super-2 number, since 2×10111091² = 204468322420562, which contains 22 as substring.

Together with 10111093, 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 (10111093) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5055545 + 5055546.

It is an arithmetic number, because the mean of its divisors is an integer number (5055546).

Almost surely, 2^10111091 is an apocalyptic number.

10111091 is a deficient number, since it is larger than the sum of its proper divisors (1).

10111091 is an equidigital number, since it uses as much as digits as its factorization.

10111091 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 9, while the sum is 14.

The square root of 10111091 is about 3179.7941757290. The cubic root of 10111091 is about 216.2383271902.

Adding to 10111091 its reverse (19011101), we get a palindrome (29122192).

The spelling of 10111091 in words is "ten million, one hundred eleven thousand, ninety-one".