11011111011099 has 8 divisors (see below), whose sum is σ = 16312757053520. Its totient is φ = 7340740674048.

The previous prime is 11011111011079. The next prime is 11011111011137. The reversal of 11011111011099 is 99011011111011.

It is not a de Polignac number, because 11011111011099 - 2⁷ = 11011111010971 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27), and also a Moran number because the ratio is a prime number: 407818926337 = 11011111011099 / (1 + 1 + 0 + 1 + 1 + 1 + 1 + 1 + 0 + 1 + 1 + 0 + 9 + 9).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11011111011079) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 203909463142 + ... + 203909463195.

It is an arithmetic number, because the mean of its divisors is an integer number (2039094631690).

Almost surely, 2^{11011111011099} is an apocalyptic number.

11011111011099 is a deficient number, since it is larger than the sum of its proper divisors (5301646042421).

11011111011099 is an equidigital number, since it uses as much as digits as its factorization.

11011111011099 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 407818926346 (or 407818926340 counting only the distinct ones).

The product of its (nonzero) digits is 81, while the sum is 27.

The spelling of 11011111011099 in words is "eleven trillion, eleven billion, one hundred eleven million, eleven thousand, ninety-nine".