111101091011011 has 2 divisors, whose sum is σ = 111101091011012. Its totient is φ = 111101091011010.

The previous prime is 111101091010993. The next prime is 111101091011021. The reversal of 111101091011011 is 110110190101111.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 111101091011011 - 2¹⁵ = 111101090978243 is a prime.

It is a super-2 number, since 2×111101091011011² (a number of 29 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 111101091011011.

It is not a weakly prime, because it can be changed into another prime (111101091011021) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55550545505505 + 55550545505506.

It is an arithmetic number, because the mean of its divisors is an integer number (55550545505506).

Almost surely, 2^{111101091011011} is an apocalyptic number.

111101091011011 is a deficient number, since it is larger than the sum of its proper divisors (1).

111101091011011 is an equidigital number, since it uses as much as digits as its factorization.

111101091011011 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 9, while the sum is 19.

The spelling of 111101091011011 in words is "one hundred eleven trillion, one hundred one billion, ninety-one million, eleven thousand, eleven".