111011102001 has 24 divisors (see below), whose sum is σ = 169663413920. Its totient is φ = 69748978176.

The previous prime is 111011101951. The next prime is 111011102009. The reversal of 111011102001 is 100201110111.

It is not a de Polignac number, because 111011102001 - 2¹⁷ = 111010970929 is a prime.

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

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (111011102009) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1648831 + ... + 1714836.

Almost surely, 2^111011102001 is an apocalyptic number.

It is an amenable number.

111011102001 is a deficient number, since it is larger than the sum of its proper divisors (58652311919).

111011102001 is a wasteful number, since it uses less digits than its factorization.

111011102001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3363885 (or 3363882 counting only the distinct ones).

The product of its (nonzero) digits is 2, while the sum is 9.

Adding to 111011102001 its reverse (100201110111), we get a palindrome (211212212112).

The spelling of 111011102001 in words is "one hundred eleven billion, eleven million, one hundred two thousand, one".