111101111010001 has 12 divisors (see below), whose sum is σ = 129240432980400. Its totient is φ = 95229254723400.

The previous prime is 111101111009971. The next prime is 111101111010011. The reversal of 111101111010001 is 100010111101111.

It is a happy number.

It is not a de Polignac number, because 111101111010001 - 2⁵ = 111101111009969 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 111101111010001.

It is not an unprimeable number, because it can be changed into a prime (111101111010011) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 15414526 + ... + 21443176.

It is an arithmetic number, because the mean of its divisors is an integer number (10770036081700).

Almost surely, 2^{111101111010001} is an apocalyptic number.

It is an amenable number.

111101111010001 is a deficient number, since it is larger than the sum of its proper divisors (18139321970399).

111101111010001 is an equidigital number, since it uses as much as digits as its factorization.

111101111010001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6404764 (or 6404757 counting only the distinct ones).

The product of its (nonzero) digits is 1, while the sum is 10.

Adding to 111101111010001 its reverse (100010111101111), we get a palindrome (211111222111112).

The spelling of 111101111010001 in words is "one hundred eleven trillion, one hundred one billion, one hundred eleven million, ten thousand, one".