111111605011011 has 16 divisors (see below), whose sum is σ = 161659377406080. Its totient is φ = 67322659427520.

The previous prime is 111111605011009. The next prime is 111111605011049. The reversal of 111111605011011 is 110110506111111.

It is not a de Polignac number, because 111111605011011 - 2¹ = 111111605011009 is a prime.

It is not an unprimeable number, because it can be changed into a prime (111111605011081) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 442553746 + ... + 442804743.

It is an arithmetic number, because the mean of its divisors is an integer number (10103711087880).

Almost surely, 2^{111111605011011} is an apocalyptic number.

111111605011011 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

111111605011011 is a deficient number, since it is larger than the sum of its proper divisors (50547772395069).

111111605011011 is a wasteful number, since it uses less digits than its factorization.

111111605011011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 885362306.

The product of its (nonzero) digits is 30, while the sum is 21.

The spelling of 111111605011011 in words is "one hundred eleven trillion, one hundred eleven billion, six hundred five million, eleven thousand, eleven".