111100101001011 has 128 divisors (see below), whose sum is σ = 182639204352000. Its totient is φ = 66390875324928.

The previous prime is 111100101000949. The next prime is 111100101001031. The reversal of 111100101001011 is 110100101001111.

It is not a de Polignac number, because 111100101001011 - 2¹⁹ = 111100100476723 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a junction number, because it is equal to n+sod(n) for n = 111100101000984 and 111100101001002.

It is not an unprimeable number, because it can be changed into a prime (111100101001031) by changing a digit.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 2497563376 + ... + 2497607858.

It is an arithmetic number, because the mean of its divisors is an integer number (1426868784000).

Almost surely, 2^{111100101001011} is an apocalyptic number.

111100101001011 is a deficient number, since it is larger than the sum of its proper divisors (71539103350989).

111100101001011 is a wasteful number, since it uses less digits than its factorization.

111100101001011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45550 (or 45544 counting only the distinct ones).

The product of its (nonzero) digits is 1, while the sum is 9.

Adding to 111100101001011 its reverse (110100101001111), we get a palindrome (221200202002122).

The spelling of 111100101001011 in words is "one hundred eleven trillion, one hundred billion, one hundred one million, one thousand, eleven".