11091919111 has 32 divisors (see below), whose sum is σ = 13902981120. Its totient is φ = 8614854144.

The previous prime is 11091919061. The next prime is 11091919117. The reversal of 11091919111 is 11191919011.

It is not a de Polignac number, because 11091919111 - 2¹⁵ = 11091886343 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11091919117) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 5921071 + ... + 5922943.

It is an arithmetic number, because the mean of its divisors is an integer number (434468160).

Almost surely, 2^11091919111 is an apocalyptic number.

11091919111 is a deficient number, since it is larger than the sum of its proper divisors (2811062009).

11091919111 is a wasteful number, since it uses less digits than its factorization.

11091919111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3055.

The product of its (nonzero) digits is 729, while the sum is 34.

The spelling of 11091919111 in words is "eleven billion, ninety-one million, nine hundred nineteen thousand, one hundred eleven".