111010111010001 has 64 divisors (see below), whose sum is σ = 197853096140800. Its totient is φ = 60093520437888.

The previous prime is 111010111009961. The next prime is 111010111010021. The reversal of 111010111010001 is 100010111010111.

It is not a de Polignac number, because 111010111010001 - 2⁷ = 111010111009873 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 not an unprimeable number, because it can be changed into a prime (111010111010021) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 101068296 + ... + 102160758.

It is an arithmetic number, because the mean of its divisors is an integer number (3091454627200).

Almost surely, 2^{111010111010001} is an apocalyptic number.

It is an amenable number.

111010111010001 is a deficient number, since it is larger than the sum of its proper divisors (86842985130799).

111010111010001 is a wasteful number, since it uses less digits than its factorization.

111010111010001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1120795 (or 1120789 counting only the distinct ones).

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

Adding to 111010111010001 its reverse (100010111010111), we get a palindrome (211020222020112).

The spelling of 111010111010001 in words is "one hundred eleven trillion, ten billion, one hundred eleven million, ten thousand, one".